I went to non-denoms when I was first saved, and it left a very bad taste in my mouth.
Besides the splits, and those following a charismatic leader, instead of God, the doctrine was fuzzy, and mostly they were all about "feel good" instead of following Jesus.
Even the Pentacostal Assemblies (AoG in the US) was a better place to be - there was some accountability, whereas non-denoms can do whatever they want, and no one ever got called into question.
I like that Baptists believe in "the authority of the believer." That means that rather than being a denomination, the churches are loosely united in a convention. But no one is telling another church how to run their church. The advantage of a convention, is support and also education for pastors. It is very expensive running a seminary, and having the support of a convention makes the difference between a seminary making it or failing.
And yes, I do think education is important for pastors. Studying the word on an in depth basis, theology, the original languages, plus learning how to teach, preach, counsel, evangelize are all important to have a well rounded pastor, who can lead the congregation in a way they grow in Christ, and in reaching out to the world around them with the love of Christ.
I'll stick with being a Baptist, as non-denoms simply don't work for me.