LOBO I,m with you on the plastic issue, If someone decided to I am sure they could build a superior plastic / composit saw with carbon fiber, epoxy resins and ceramic engine parts. BUT IT WOULD COST TOO MUCH.
The problem as with far too many things these days is the drive to build cheap disposable products. Plain an simple a lot of items are not built or intended to last, and are often not even designed to be repaired irrigardless of what there made of.
What a saw is made out of is inconsiquential, it is in how the equipment is designed, tested, and manufactured. If you by cheap equipment chances are your bying cheap research, development, low cost materials, and bulk manufacturing.
Insist on quality and the most value for your $$$, not to say I dont by disposable items, I do but only where it makes sence to me. I prefer to by quality and if I only need it a short while I sell, trade, rent, lend or give it to someone who does need it.
The bottom line is more gramatics - It's not that "the saw is cheap junk because it is made out of plastic", It's that "because the saw is cheap junk it is made out of plastic."
Timberwolf