Older. They’ve all been active since at least the early days of American involvement in World War II - so, that’ll put us to around 67 years ago. Jay was a college student, so that makes him 18 at the least. So that puts Jay (the youngest of the three*) at 85 (at least) this year. Although, due to various methods, they all appear to be in their 50s or early 60s, at the very oldest. How Joan Garrick (Jay’s wife) only looks to be in her 50s as well, I don’t know.
- Based on the fact that Alan was an established engineer, and Ted was a relatively famous boxing champion.
(And super-powered people who don’t want to be heroes or villains… Off the top of my head:
Most of Marvel’s mutants who just want to be left alone. Specific examples include Kida Nixon, Dazzler (who, at least in the Ultimate version, just wants to be a singer), various other mutant entertainers…
Sersi, of the Eternals, currently wants to avoid any responsibilities from her powers. (She also refuses to believe she is what she is.)
Gehenna, in Firestorm, who keeps getting caught up in Jason’s adventures, but has no particular intention of using her powers for anything but self defence, and helping Jason.
There are super-powered law enforcement officers in both DC and Marvel - I would consider a payed position as a cop or federal (or UN) agent to be different than being a superhero. Soldiers, too.
Welcome to Tranquility involves a town full of super-powered people, and while most of the older residents used to be superheroes and supervillains (they are, however, retired - and, BTW, are another lot of elderly supers), there are a number who never have been, at least as far as has been indicated so far. The town’s doctor, for instance.
The ‘just leave us alone, please!’ archetype extends to groups other than Marvel’s mutants, too. The New Universe’s DP7, the current run of Gen13, and so forth. It’s not unusual for these groups to be pushed into heroism by circumstances, but it’s also not unusual for their adventures to remain a matter of personal survival and maintaining their independence.)