My favourite is when they ignore you when you speak English (which isn't even your native language either, just the most likely language to be understood by both parties), then when you speak bad French, they reply on even worse English. Bonus points for those that do it to tourists in France and as tourists in other counties (both have happened to me but ofc I can't know if the same person would do both).
Good to have backup in case you get precum on the outside or for when you want to switch between penetration and other stuff (if youre unsure about STDs it's better to use one for oral too though)
Not talking about the artificially created species, that's a separate issue. More things like overfishing. And hunting of other species that are endangered but not as cute and lovable.
Still pursue a career in fundamental research, but without burning myself out working nights to survive while finish my degree. After already being diagnosed without burnout.