My secret is I've been wearing BDUs and other kinds of surplus tactical/cargo pants since like highschool. Much as I despise the Mil-Ind-Com, some old G.I gear lasts a lifetime of use. It's made to resist rips and scrapes too.
Not only are they roomy and utilitarian, they're often much more breathable than thick jeans in summer. (And what's with jean pockets?!?) They don't particularly stand out unless you wanna have a fun pair like black and white "urban camo" or sky blue or purple or something.
It puts everything I use in arm's reach, too.
...Oh and you're not paying out the nose for some stupid logo embroidered on the buttocks.
I just avoid currently-issued stuff so nobody mistakes me for a servicemember or something. That'd be awkward.
Otherwise, for everyday life thankfully they're somewhat trend-immune, style-wise.
Just be aware of the blends. Old-style stuff might be much more cotton-based and breathable, for instance (but less durable). Polyester+Ripstop is pretty nice and durable but a bit coarse.
But there was a bit of a kerfuffle over the Navy trying to be trendy with that digital "blueberry" camo... apparently that crap melted pretty bad when exposed to fire. . .on a navy ship. Yeah. Yikes. (Not to mention blending in with the ocean if someone went overboard. Yay?)
Whoops. There's my pants-rant.
Oh, and I'm SO HAPPY flare-cuts are coming back because my wife rocks them. Hope that trend lasts a while.
...otherwise "fast fashion" needs to die as quick as it goes out of style...