[Question] What are the best arguments for an exclusively hedonistic view of value?

I haven’t been convinced by anything I’ve read, but I also haven’t read much.

I’m concerned that unless you use preferences, you couldn’t justify any kind of tradeoff rate between (and hence the commensurability of) suffering and happiness/​pleasure, because they are fundamentally different. Then, by using an exclusively hedonistic view of value, haven’t you already rejected the moral relevance of preferences, and, if so, how would you justify referring to them to defend hedonism? Even if you could set a tradeoff rate based on preferences, how would you justify using this rate for everyone, given wide differences in preferences?

If not preferences, what else is there to refer to?

There are also of course thought experiments like wireheading and Nozick’s experience machine. Why would I be wrong to not want to subject myself to these, compared to, say, doing anything else I prefer, assuming no effects on others in all cases?

(Note: I shared this post on Facebook, and some discussion is happening there.)