My job brings me opportunities of scale that I'm unlikely to find elsewhere, and I genuinely enjoy the challenges, but I'd work on something else if they didn't

My job brings me opportunities of scale that I'm unlikely to find elsewhere, and I genuinely enjoy the challenges, but I'd work on something else if they didn't pay me to do it. It's not that it's not fun, but fun doesn't pay the bills. If it didn't _have_ to pay the bills, I'd probably still develop software but with a very different focus.