Sounds like you're disillusioned with the Westernized commercialized stuff that passes for Buddhism around here at these velocities. Me too.

As others have commented, Buddhism isn't about do's and don'ts. A lot of this stems from mistranslation of the sacred texts, eg, a word better translated as "skillful" (which opposite is "unskillful") becomes "right" (which opposite is "wrong.")

But old habits of thinking in terms of "right / wrong", "sin / virtue" die hard. Like you, I was raised Catholic, only we went to Mass every Sunday (sometimes every day) and had to run to Confession whenever we "sinned." This distinctly Catholic habit of Confession can create a form of OCD called "scrupulosity," where one becomes obsessed with one's so-called sins and compelled to perform ritualistic actions (often including self-harm) in connection with one's "sins." Martin Luther suffered from scrupulosity; this was one of his main motivations for branching off with his own take on Christianity. I don't know if scrupulosity is a common malady among non-Catholic Christians but I don't think it is; I think comes from the Catholic practice of Confession. But I digress.

For me, and probably for others whose minds are similarly contaminated by Abrahamic notions of sin and redemption before a voyeuristic Sky Daddy, it's probably best to stick with the basic: compassion for all. And that's in most religions, including Christianity.

There's a lot of literature out there about experience while on a Zen Buddhist retreat. At the end, the author usually experiences something like what some people would call "enlightenment." Books like these are a pleasant and engaging read, but one wonders what happens when the author returns to the outside world. It's easy enough to practice mindfulness and compassion when surrounded by monks and nuns and all of one's basic physical needs are being met. It's another thing to keep this way of being when surrounded by the grime and noise of everyday life and struggling for everyday survival.

So I'll just stick with kindness as my religion. If it's good enough for the Dalai Lama, it's good enough for me.