Do I need to build a "gaming" computer?

[Cobalt]

So currently I have a laptop, which isn't really suited for games (integrated graphics card, etc.). I haven't had a desktop PC for a while. While there is one in the house, it's definitely not a game PC. It's mostly used for the business and other type things. My partner does video editing on a separate computer but I don't really want to go into that one, it's his and I don't want to mess with it.

Truthfully, I don't think I don't have real desire to play Street Fighter V. I considered it but I don't think I'm all that impressed enough to invest money into a system to play it. Street Fighter IV however, yes. I have it for consoles but I always wanted to mess around with the PC mods/skins.

I'm against considering a gaming laptop, mostly because I've never read any good news about them. I'm leaning more towards building a PC but I'm not totally sure just yet. Building wouldn't really be out of the question ability wise, money would just be the issue. My partner is an engineer, so electronics and components are second nature to him. If I got stuck with something, he could figure it out I'm sure. I did tinker around with a desktop PC I had years ago, so I was/am a little familiar with swapping parts out as well.