This is us as well. I don't really think of it as obsessed though. I know people who don't keep any type of budget who seemingly do fine with it and others who really struggle. But we've always been zero based budgeters....every dollar has a place to go. And that fear of not having enough is real for a lot of people for sure.....usually hits in their 50s. For us, we've always been hyper-aware of what we have, but our "number" did increase over the years as we began to enjoy more international travel.
We just returned from a 16 night trip to South Africa that was just incredible. And we both came away thinking that it wasn't a "one and one" for us for that destination, or Africa in general. We'll go back for sure. We've hit our expanded "number", and DH has set his finish date for the end of next year, in his mind anyway. But then on this trip he did say that it's pretty nice to have received two nice paychecks while enjoying this vacation.....and maybe he could just dial back his engagement a bit (but I think that would be hard for him). But...we'll see. I do know as a childless couple who enjoys travel that our number needed to be bigger than what we anticipated in our 30s....now that we're there, I feel like we're just continuing to build a buffer.
One thing for sure, as we've watched two parents age and pass away....two others aging with issues here and there, we know that the clock is ticking on getting out there and seeing this world of ours. And the older we get, the more couples we know where one is having serious health issues affecting travel, etc. A real "tick-tock" feeling begins to set in.