I watched Sword Art online as my very first (friends recommendation) but Attack on Titan and Fullmetal Alchemist remain my favorites.
My first anime was SAO, same as you and it was recommended to me by one friend, I loved it, my 2nd anime was AOT and I also enjoyed AOT a lot, AOT and SAO holds the 1st place in my favorite anime list
My first anime was Death Note and I like it ,,but by favourite anime is SAO and AOT,
First one I’ve ever watched was probably K-ON but the first one I finished was Devilman Crybaby.
Mines is Pokémon, my childhood favorite of the series
Mine is My Neighbor Totoro
What do you think?