What didn't you understand before about why certain things are but now do because of your experience?
Like why some apartments allow no tenants with pets. Living in an apartment building, some tenants around me absolutely fucking suck with owning pets. Allowing them to bark, wrestle and play loudly, letting them take dumps everywhere and not picking it up. People actually running with their pets with no leashes when leashes are required.
Yeah I side more with apartment offices that have balls to say no pets. Nobody wants the noise.
The code stack at my company. At one time, I was confident that I could affect change, add modern features, and make the process form streamlined and user friendly. Now I get to explain our tech debt to our new not yet soulless new hires.