how often are you riding when you check ever 2 weeks, how many km's?
I've been guilty of treating my 2x10 drivetrain like chit in the past but now that I'm trying out a 1x system (still not sold on it, but whatever) and a cassette costs a ridiculous amount I'm thinking I should start checking for chain stretch more often.
Commuter bike sees ~150 km / week, MTB 2-3 rides per week. Commuting in winter is much harder on chains/drive trains than trail riding. I left my commuting chain too long, so now I am defaulting to the 'ride it till it dies' mode.