I'm a big hour guy, but it hasn't translated into results. I've had many 12 - 15hr weeks and that's been during race season. My fault us that I really enjoy riding my bike. Add in the fact it takes 30-45min to get to suitable roads for workouts and the hours pile up.
Cripes I did 50hrs in January on the rollers, but some of that was therapy
I think that's part of the issue, there's been so much going on in my life the last few years and the bike time has helped me deal with it... Or maybe not deal with it....