Yeah...While science doesn't generally burn its heretics at the stake, it's still not very welcoming of things that disagree with its current opinions, and it's way too accepting of some stuff. Yes, the beauty of science is that it's changed, but hey an awful lot of religions have too. (The bible said it's okay to keep slaves, but obviously we don't do that anymore. Newtonian physics is now known to be false, but we still teach it and use it to inform our understanding of the world...etc.)
Let me toss out some examples of how science is pretty screwed up sometimes.
Climate change. You'd be hard-pressed to find people on this forum who don't believe in at least some anthropogenic climate change. Exactly how much, and what the effects will be, is still debate-worthy...but science boards frown OH SO VERY HEAVILY on anyone who dares to question, and can try to ruin peoples' careers over it. Okay they don't burn people at the stake, but neither does religion anymore. Me, I lean on the side of "oh shit this is serious", just for the record, I'm no denier. But I gotta point out the similarities between that and what religion is accused of. Not that different.
Medical research. Totally screwed up field, even for people who
mean well. Reproducability is not always very good in this field. You try out a thousand compounds, and ten of them actually work, you use a lot of rigor, verify your stuff, it's reproduced in other labs, you submit your paper... And guess what! It was still blind chance! When people go back to duplicate the experiments, they get different results. I've heard horror stories of advisors saying "Don't get your hopes up, chances are it's not going to work a year from now". So much for peer review. (Which is pretty terrible a lot of the time, anyway. Outside of the main important work, the dark back roads of science are...not very well patrolled.)
[...] However, religions claim that you must sacrifice of yourself with no hope of reward, yet they say you must do this to get the reward of 'heaven' or what ever their after life is.
One problem is that almost every religion holds that we are born in some sort of default 'original' sin and must spend our entire lives trying to make up for something we never did and is impossible to make up for, and that is apparently inherent in us. [...]
Are you kidding me? Have you ever, EVER studied religion formally in your life, or does your entire knowledge about all world religions come from nothing but the bible-thumpers next door? News flash: Christianity is not the only religion in the world. Many of them are very, very different.
Christians aren't even the majority religion in the world; I don't think they're even second place. Maybe third place? Less? EDIT: Well screw me sideways, looking it up apparently I was wrong about that. Weird; I'd always seen sources claim that Islam and Hinduism were both more prevalent.