I think 100 miles is a little low. I don't keep good stats on my running, but a quick glance at this year's running stats (according to Strava) makes me think I've lately been getting closer to 1000 km in each pair of shoes.

But yeah I guess the real point you're making is that if I am actually using and wearing out my stuff, this isn't really a criticism meant for me regardless of the specific number of shoes I go through. (Though maybe I do have some life balance issues.)

Yeah that seems more reasonable, depending on what you pay for them. Runner's Guide says 300-500 miles.

And Yes! wearing out stuff is the goal! Especially athletic equipment. My niece (8yo) just wore out the back tire on her tiny bike, just wore the tread right off from use, and the cousins (all older) high-fived her and told her You Go Girl! She was very proud.

Time for a new bike anyway - she's grown some. Auntie went right out with her to buy one and now she's back on the road.