I don't have a PC that could run either PC VR solution so it's not really a choice for me.
Still, my biased two cents:
Maybe people will get PSVR to work on PC, maybe not. Though one thing for sure is that the PC devices will never run on the PS4, which is where I do the majority of my gaming.
Without going through lists I also have impression that PSVR will have the biggest lineup/most exclusive games (because well, Sony is the biggest developer around) so apart from some cool (probably non-gaming) indie-stuff I doubt I will miss out on much.
Being gen1 for VR, I have no trust yet in movement solutions like with the Vive. I prefer something more "conservative" and PSVR reduces the costs further for me because I already own two Move controllers (and the PS4 cam). Anything but a seated experience might also be too much for my gaming habits (that and all of the VR devices still needing cables).
I do like a lot that the PSVR can simultaneously output your view on the TV. Overall I would bet that Sony's device will the most user-friendly experience and involves less hassle to set up (especially as it should benefit that the games have to run in a fixed setup considering now you can actually getting sick from messing stuff up on
).
Regarding porn, all Sony has to do is update the Media Player app to run VR adjusted mp4s. There will be a movie-playback of some form so it only depends on if that extends to user content as well.
But to be on the save side I bought some 20€ Chinese box to put my S5 phone inside. Shitty quality but it... gets the job done... ahem
Another question would be if you guys are audio-ready for VR? You can plug in and wear any stereo headphone with the PSVR and I recommend using something of quality.
I already mostly game with my Sennheiser 558s (+mixamp for surround) anyway.