Starfleet probably censors the sex programs on their holodecks. I'm sure the civilian ones are incredibly raunchy.
But you just need to look at games to see how holodecks/suites would evolve. Sex is not a big theme, but violence sure is. Holodecks would be used for combat simulations, both by Starfleet and civilians.
Casual/social media games are also taking off in a big way. They run the gamut from exploration/adventure to work simulations of restaurants, hotels, farms etc, and some appear to simply be an excuse for socializing with friends, where the gameplay is little more than a joke.
We havent seen holosuites used as communication devices, for people to keep in touch with distant friends. That should be a big use on starships - people dont need to haul their families around on starships, they can just meet them in the holosuite for virtual socializing.
Greg Cox wrote:

I mean, why are any of us watching STAR TREK instead of porn /7? Or even going on the internet to debate the future of Trek of all things?
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Good point. TrekBBS is a game, and in the future, there will be holo programs for doing what we do here. Except our avaters will be a lot more realistic and complex, and the mods will have to break up fistfights.