I'm guessing that "play that seriously" is in regards to the price? Or the effort to "maintain" them? Maybe both since that's why I've stayed away from them.
The price point is starting to get a lot closer now though. Between cheaper games, longer game life through mods and now it seems like they are going to be releasing new consoles quicker. *I also only have basic cable because I never watch TV so I'm okay with setting up a PC on my big TV. Then cutting out cable completely.*
As for the maintenance and upgrades aspect, it seems like you can buy pretty good pre-made systems now that are well beyond consoles. Most of the major console games come to PC as well, so I'm guessing that as long as you aren't looking "ultra-mega 10k" graphics we should be fine without upgrades for awhile.
As far as shooters go, despite my enjoyment of them I'm not good/quick enough to win far fights anyways. Half the time I don't even see the person in the distance shooting at me. I have to win gunfights because of knowing maps and taking routes and that kind of thing. So I'm not to worried about that switch.
This feels like a bad relationship where PlayStation got a new high paying job so they think they can treat people like garbage now.