I can kind of understand where atheists are coming from.
If I had been taught from birth that I could earn my way into heaven by doing penance for my sins, I probably wouldn't think much of God either. If I believed that I could buy my way into heaven I would be completely disgusted with Him.
Billions of people who have lived lives of horrific suffering have not accepted Jesus Christ as their Saviour. Many don't really understand who He is. Many fear of rejection or even torture at the hands of their friends, family or government. If I believed that those billions would ultimately be further tortured in ever-burning-hell by the God who calls Himself Love, I would turn my back on Him too.
On the other hand, if I believed that babies who couldn't speak a single word got to go to heaven just because they had water sprinkled on them in a mystical ritual, I would think that was really unfair. How could God know those babies would actually want to be there? What if they decided they didn't like God? Would He "force" them to like Him and do things His way - turning them into some kind of glorified robots?
Thankfully, I believe what the Bible actually says about God instead.
God has been subject to the greatest identity theft in the history of the universe. Over and over throughout history, God's name has been falsely stamped on acts of cruelty, ignorance and stupidity - on wars and crusades, on superstition, lies and trickery.
Thankfully God knew right from the beginning that this would happen and He has a Plan - a great, big, huge, enormous Plan, far greater than we usually give Him credit for.
You can either get to know God now through His Word - reading the Bible for what it actually says, not what other people say it says. Or you can sit back and wait and see what happens. Either way, you'll get to know who God really is eventually - that's all part of His plan. But the "wait and see" approach will definitely end up being more painful in the short term. Read the book of Revelation and you'll see why.