No.44282
It's not life changing if you're over the age of 13 but it's a cult classic and I think being "in the known" can't be a net negative. What I would do is watch the original run, then End of Evangelion and finally move on because the Rebuild sucks and isn't worth your time.
No.44283
There's a certain time in your life to watch anything, and it's probably been overhyped to you.