I went through the same thing but with the Gundam series, I just got tired of the same bs over and over and over and the endless MS repaints and designs. I didnt end up selling my stuff but packed it up for the day that maybe Gundam will have an original idea once again. The only good transformers are G1 transformers and compared to other anime of the time the story is lacking (as we all know it wasnt about the story but more about selling toys). If you have no more interest like VF-19 says give it a month or two, if you still feel no love towards anything transformers sell em all.