It takes a little work to be a vegan, but now it's really possible to have tasty stuff and it's better for you. I say the best test is go as far as you can and see how you feel. Personally, I feel great. ↗
For scientists, growing cells took so much work that they couldn't get much research done. So the selling of cells was really just for the sake of science, and there weren't a lot of profits. ↗
People have to talk about something just to keep their voice boxes in working order so they'll have good voice boxes in case there's ever anything really meaningful to say. ↗
Mathematicians aren't satisfied because they know there are no solutions up to four million or four billion, they really want to know that there are no solutions up to infinity. ↗
I know it's a rare privilege, but if one can really tackle something in adult life that means that much to you, then it's more rewarding than anything I can imagine. ↗