I’m a hedonist and utilitarian. In the end, the only good is pleasure, and the only bad is pain. And since no one has a claim to their pleasure being more valuable than anyone else’s, everybody’s pleasure matters. But pleasure and pain are a lot more nuanced than most people think, especially when it comes to which pleasures are better than others and which pains are worse than others (or figuring out when it is worth forgoing a pleasure or enduring a pain).
I also think avoiding pain is more important than gaining pleasure, partially because the absence of pain is itself a very great pleasure. And importantly, what counts as a pleasure or a pain is going to be based on facts about human nature. We are naturally empathetic (well, the sane among us are), so benevolent acts will often be pleasurable. This goes back to pleasure and pain being nuanced. A lot of people think of hedonism in the modern sense of excessive eating, drinking, and fucking. But a thoughtful hedonist avoids excess and balances these more obvious pleasures with less obvious ones.
Most ethical theories actually agree about what we should and shouldn’t do most of the time. It’s just a difference of how they get there. The arguments happen when there is a situation that we don’t already know the answer to, which also ends up being when different theories give different results.