The Ps-90 is more for shit's and giggles.
Which is totally cool. They're not bad guns, they just use expensive ammo that may or may not stick around. The gun culture is pretty conservative when it comes to new stuff, and slow moving when it comes to technology. (And for good reason! Testing self defense rounds should be rare!) a good nine out of ten new ammo types die off, and they're almost glacier like in the speed of adoption, with few exceptions. That means expensive because of low demand.
For instance - The .454 Casull was designed in 1959 as a high powered hunting round to replace/enhance the venerable .45 Colt (Long) It is considered a fairly popular hunting round. The adoption rate is maybe ten percent of the .45 Colt,
49 years later, and has already been surpassed by the round that replaces/enhances it. (The .460 magnum) A gun that shoots .460 mag will also shoot .454 Casull and .45 Colt. The .460 mag and .45 Colt are both cheaper than the .454 Casull, (Around the same price for both, 25-28 bucks for 20 rounds, compared to around 35 bucks for 20 rounds of Casull.) even though the .460 mag uses more brass, powder, copper, and lead than the Casull. Supply and demand, etc. But then think of this - You can buy a
500 round box of .22lr, which uses three to four times the brass, lead, powder and so on, for thirteen bucks. Again, demand creates supply.
Expensive ammo = less practice, for most people. Less practice = less mastery.
The revolver is for self defense. For some reason, Revolvers seem a bit more safe for the user.
Well... Yes and no. Revolvers have NO safety mechanism whatsoever. Just a trigger that's harder to pull and less likely to snag and discharge. They're easier to use and maintain, and are a hell of a lot less likely to have mechanical failures of any kind. I like revolvers, so I'm a little biased, but most gun people will agree with me on these points. Revolver hate is mostly directed at the less concealable shape and lower ammo count. Shape doesn't bother me, because a properly carried gun isn't noticeable anyway, especially a J frame, and ammo count, well... If you need more than five rounds to deal with your problem, you either need to practice more or run like hell, because you're fighting off more than two people or you can't aim.
But what the hell do I know? That's why I started this thread..
Don't bag on yourself, you gotta start somewhere.