header wrap? pro's / con's

I don't like it.
"I hate the dam stuff"! I bought a used set of 2" tti`s that were chromed, w/ wrap on them. I repaired a couple of tubes, and re wrapped the headers w/ new wrap, figuring I`d have them coated later, but wanted to makes sure everything would fit. I must have got some cheap stuff, or my engine bay was too hot, as it`s already deteriorating some. I used the best of the orig. wrap to wrap my complete 3 1/2" exhaust system, even my home made mufflers. I have vents in my hood, and run extra alum heat gaurds that have wrap on them to keep from melting my valve cover gaskets. Starter motor wrapped also. Even have a couple of tubes putting fan blade air to the hot spots on the valve covers. All this crap is working, BUT, dam I HATE THAT STUFF! Oh, buy the way there was no rust on the used headers when I first in wrapped them, doesn`t seem to be a problem . ????