I don't know if people also look at other prostate surgery threads, but theres to be a common issue with many of the procedures - the quality of orgasms definitely changes. I don't care at all about retrograde ejaculation (except for the first couple times, when it felt distinctly uncomfortable), but there's something up with the actual pleasure part of it. I asked my surgeon about that (I had a very successful HOLEP). He shrugged it off, but my urologist explained that it's commonly understood that there are pleasure centers in the area of the anatomy that actually releases semen, which makes some biological sense. When those are removed, there's a feeling of incompletion that interferes with the feeling of orgasm. I wish my surgeon had mentioned that, but he's very much "that's not my department" about it and I'm sure that guys might not run to get life-saving surgery that also messes with such a primal and important part of life.
Something that seems to be less understood is what neale360 says above - about the build up being more intense. Boy howdy. Yeah, same here. It feels more body-based than before and it's kind of interesting. My wife suggested that maybe it's closer to what women feel when orgasming, and I've always been a little curious about that difference, so I'll just keep exploring the feeling.