Having had this lens (70-200mm) for a while but I find it difficult to get any good use out of it, for me at least. May be good for portrait but I use my primes for that mostly. At the long end 200mm, it's not long enough for wildlife. I have an extension lens but we're not talking about that right now.
So, I would like to know from fellow forumers what you use this lens for mostly.