Nah, you're cool. I know my system's old, but as you say there's still plenty of life in it, so I'll keep it for now. Especially since I stick entirely to indie games these days.
But actually, I'm keeping an eye on auctions for something just a few years newer. Games that require AVX2 extensions are finally starting to come out, and my CPU doesn't support them. Even with indie games, most of them use third-party engines, so it might not be too much longer before it's an issue even for me.