I think I’ll stick to being a Pagan, and accept that I am responsible for the consequences of my own actions.
I'm Catholic, not Pagan, but same.
The New Testament says repeatedly that, while it's by Grace through faith that we're saved, it's by our actions and our choices that we'll be judged. I honestly don't know how anyone squares that with the idea of predestination in the strict sense (that there's no free will) or with the idea that being "blessed" with material wealth is a sign of Divine approval of whatever someone does.
That's how some Christian denominations take it, sure. However, the more common (I hope ...) way to interpret the concept of Original Sin is "all people are bad in the eyes of God, including my peeps, but since we're all people here, let's talk about shades, grades, betterment, and ideally, pardoning clauses."
Original sin is different from total depravity. Original sin means that human nature has been corrupted as a result of the Fall (the literal original sin in Eden) resulting in a darkening of the intellect, loss of various preternatural gifts (like immunity from disease and death), and a tendency toward sin called concupiscence.
But not every denomination that believes in original sin believes in total depravity. I'm not familiar enough with the doctrine to know
exactly what that phrase means, but the idea that people are entirely evil and can't do anything about it other than overtly accept Christ seems to run afoul of the New Testament. Among other things, one of the epistles says that those who haven't received Revelation are a law unto themselves, meaning (roughly) that they are capable of knowing right from wrong, even if imperfectly, and they are both able and expected to choose to do good based on what knowledge they have.
There are some Protestants who believe that humanity is entirely corrupt and our salvation is the result of God covering over our corruption and looking the other way; in this view, we're like dung heaps covered with snow. Perhaps this is what some of them mean by total depravity? Either way, this belief is definitely anti-biblical, as the New Testament speaks often of the genuinely transformative power of God's grace.