I travel a lot for work, and don't always have a lot of flexibility which airline I can fly. So I aim to get the first tier of status on United, American and Delta.
I have an AA Visa (or mastercard?) that can give me status on American after charging like $45k to my credit card (with no actual flying). So when I'm traveling and charging to that card, I get status fairly easily on American. If I'm traveling enough, I'll also hit it on whatever airline I'm flying to the client site.
Again, it's a convenience thing. Don't really care about get the max rewards/cash back/points. Priority boarding, so I can have space for my carry on, and choosing my seat at check in is worth way more to me.
But otherwise, you don't get a whole lot with status unless you make the top tier in most cases (which is like 100k miles or 75 flights in most cases). I don't spend enough time in airports to care about access to lounges - if I don't miss a couple of flights per year I'm doing it wrong.