I will give you 5 bajillion dollars if you can name one instance where the factory speaker wires burned up because of the addition of an amplifier.
Full range audio signals in the 50 to 150 watt rms range will not burn through factory speaker wires, ever, not even the in darkest most ignorant...
Yes and no..
It will depend on the specific model of the sub and the type of enclosure. Some subs have no audible difference over time while other models will seem to deepen and have higher sensitivity over time.
These audible differences mostly happen in sealed applications while vented...
You just saying that because you want to **** on my ****** *** ** **** **** **** while hanging from a ******** during a ****** because you are a ****** ****** ******** and you ***** ***** and you'r mom ***** ******* ** ***** too.