It's the sovereign thingy they hate. They want a co-reigner in God, maybe even a right hand man for them in God. Basically, they rather control God than be controlled, (as if they could.)
The problem I am seeing is ppl are so stuck on God being a God of love, they do so to the detriment of all of His other attributes. Its like they divorce His love from all other attributes. God is not just love, but holy, just, righteous, wrath, vengeance, but all they focus on is love, love, love, LOVE!!!
The LGBTQ community believes that as well. Try saying God is love to them. I picture things going like this.
Jane goes to a local LGBTQ parade to witness to them. She sees a young lady by herself and she introduces herself to her.
"Hi, I am Jane. I noticed you were here at this parade, and I want to tell you God loves you."
"Hi. I am Judy. I know! Isn't He wonderful? He loves everybody. We are made in His likeness, and He loves us just the way we are."
"Sorry, but He does not love your lifestyle. He loves you, but not your sin."
"What do you mean? God is love, and He can not hate."
"Well, He does hate your sin. He loves you, but hates your sin."
"Look, God loves us the way we are. You are just being silly. That's just like you Christians. You always want to look down on those who are not just like you!"
"Sweetie, that is not what I am doing, but I am concerned for your soul. Those who don't repent of their sins, and die in that state, will go to an eternal hell."
"There you go with God loving me, but then casting me into hell! You are wrong. God is love, and He loves us just the way we are. I help my neighbors when they need help. I go to the homeless shelter twice a week and help to serve meals to the less fortunate. I have donated a bunch of clothes and money to them through the years. I have even driven some of them to hospitals when they need medical care. I help my neighbor, and that is what Jesus said we should do. He loves me just the way I am."
"Sorry dear, but that's not true."
"Look, I am through with you and this 'god' that will cast me into hell. That is not the God I know. I think its best you leave me alone, or I will call for the police."
Yes, God is love, yet because He is love, He also must hate. He hates those who commit iniquity. This 'God loves the sinner but hates the sin' looks good on bumpers, but its not sound teaching.