Which sentence is better?
1. He is taller than I.
2. He is taller than me.
***NOT A TEACHER*** Wow! Get ready for a heated discussion. (1) He is taller than I. = In the opinion of some people, this is the "correct" answer. In university-level writing, you would be wise to follow the "rule." (2) He is taller than me. = The way 90% of Americans speak and write. Furthermore, younger people may be "afraid" to use the first sentence because (a) they don't know the "rule" or (2) they want to fit in with the group. Good luck! (P.S. I said 90%. Maybe I should have said 99%?)
Thank you all. I feel that Nightmare's reply answers the question best. I'm not sure that something is correct just because most people do it or that it is accepted, but I also realize that language is always in the process of evolution. I suppose that everyone has their opinion.