Greetings,
As someone who upholds the validity of predestination and election, please allow me to clarify some of the frequent misnomers that have been spoken of while simultaneously answering your question about predestination my brother.
1) God is sovereign (Ex. 15:18; 1 Chron. 25:11; Psa. 22:28) meaning there isn't anything that He cannot do or accomplish.
2) He exercises the sovereignty in actively ordaining everything (Deut. 32:39; 1 Sam. 2:6-8; Job 9:12; Job 12:6-10; Psa. 33:11; Psa. 115:3) meaning, by His providence all things that He ordains must come to pass.
3) God only purposed to redeem a certain number of people (1 Chron. 17:20-21; Matt. 22:14; 1 Peter 2:8-9) and
4) Christ only gave His life for the elect (Isa. 53:10; Matt. 1:21; John 6:35-40; John 10:3-4,11,14-15). Jesus Christ didn't even pray for the world, He only prayed for the elect (John 17:9).
When God predestines some unto salvation it is the attribute of grace manifested from Him unto the undeserving. We as created men and woman do not have the right to ask 'why' (Job 33:12-13; Isa. 29:16; Isa. 45:9-10; Matt. 20:1-16; Romans 9:19-24). God's motivation in election is His own good pleasure (Eph. 1:5; 2 Tim. 1:9). God does not force people to go to hell or condemn them before they are born, He just allows some to freely proceed in their own sin until they perish from this life, then He rightfully judges them. God has a general love for all created things in that they all are appointed, at least some good, by His longsuffering the vessels of wrath fitted to destruction (Romans 9:22) but He doesn't wish every good to them all. So therefore, He doesn't wish salvation (eternal life) to all, so it's said that He reprobates some. Reprobation is not a positive action. Reprobation is the cause of what is in the present namely, sin; but it is the cause of the lack of grace shown by God (which He is under no obligation to show). Furthermore, Reprobation (lack of grace) is the cause of what's assigned in the future, namely, eternal punishment, but the punishment is just because it is a punishment for the sin of an individual.
Let me further clarify this idea of the "predestination of God, sends some to hell." In Scripture when it says that God predestines some, it's to an ultimate end. E.g.,The saved are predestined unto eternal life, while the unsaved are predestined unto damnation, the human race is predestined to inhabit the Earth a finite period of time, birds are predestined to fly above the ground, the Universe was predestined to have 10 dimensions (with 4 being immediately recognized by mankind). See, the predestination of God is general in the sense that it doesn't override our ability to choose. Forgive me if this is getting complicated, but, God is a complex Creator

. Within this general predestination there is a specific predestination. God's specific predestination, once again, will not override man's ability to choose but it is evidenced in the grace being manifested to some, and not others. Predestination is a Biblical doctrine and it's nothing that we should run and hide from. It is something that we should praise our Creator for, because, while we were yet sinners, Christ died for the ungodly (Romans 5:6-8).
Misc. Notes:
Contrary to popular belief, John Calvin did not spawn the doctrine of 'Calvinism'. John Calvin just spotlighted the magnitude and importance that predestination and election has upon, humanity (generally), and salvation (specifically). Martin Luther actually addressed this very issue and spoke on it more frequently then did Calvin, as did Thomas Aquinas, Augustine, Peter and Jesus Christ. The 'doctrine' of predestination and election was a normal belief among early Christians up until the 16th century when Jacob Arminius lied in order to be able to teach this doctrine in college, which later was condemned as
heresy by the Synod of Dordrecht (Dort) in 1618-1619.
The Arminianist theology is considered a heresy (although not as bad as Pelagianism) because it puts man as making the first move in salvation (first Cause), then God subsequently reacting to mans actions in order to bring salvation unto the respective believer. Men work for their salvation by coming, of their own accord, to Christ, on their own strength, and they “decide” to follow Jesus. Grace is good, and grace is helpful, but it is man that actually makes the difference. Furthermore, it states that God had to use His foreknowledge to see who would believe, they respond to man (whom would believe). It also confines God to a linear time dimention indirectly denying the reality that God sees every point in time equally and not just on a linear plane. Arminianists also lack in providing adequate Scriptural references to back up their doctrine.