This question is regarding the G1 cartoon. Do you think it was valid for them to bring Optimus Prime back to life? I mean, 'The Return of Optimus Prime' was a nice 2 parter, and a good finale to season 3. But come on. The guy died. His body turned grey, his eye lights went out. The autobots gave him up for dead and sent him off on a funeral barge in space. The matrix was passed on. Suddenly a year or so later the hate spores are everywhere, and it's like 'oh let's just get a quintesson and bring him back to life!' If it was possible...why not try it before?
Of course, we all know he was brought back because kids liked him and not Rodimus. But as far as the in-series explanation, even as a 10 year old I had trouble with it.