I went through a similar thing during G2, not because G2 was fundamentally awful (though some of it was), but I was just at a time in my life when I had other priorities - I was in my late teens/early 20s. For about 5-6 years I had very little to do with TFs, and then my enthusiasm was reignited with Beast Wars.
Your enthusiasm for any hobby naturally goes through peaks and troughs, and can sometimes result in suspending the hobby altogether. I'll freely confess to going through a bit of a lull myself with the DotM toys, partly due to toy/character quality, party due to a terrible release schedule through Hasbro Australia. I'm quite looking forward to the TF:Prime toys though.
SofaMan - Occasionally Battling Evil with his Mighty Powers of Indolence