Highly disappointing. Since I don't care about playing GTA tennis, yoga, or triathlons, etc, AND I find most of the vehicle-based missions tedious and boring, this game to me is at least as bad as GTA 4 (which is okay in my opinion).
I was excited by all the hype but I just don't get it. This article is the first piece of writing about the game that resonates with me:
Grand Theft Auto V review: A rebel game that forgot how to be transgressive.