Just before my grandfather died he gave me a circular saw he got in the late 50's. It cost him a months salary. Its a monster. 100% metal right down to the trigger you pull to switch it on. It works as well as the day it was made. Its a piece of fantastic quality engineering... that my grandfather couldn't afford until he was middle aged.
The existence of plastic throwaway circular saws at Home Depot is a good thing. It means that some people who would never have had them at all can now have one, albeit a poor one. The trouble is, it makes it harder to find a saw like my grandfather's when you decide that its what you want.
And it is what you want in the end. Carefully buying top quality things as you can afford them is brutal at the beginning, but as you build up a cache of high quality things, you can stop buying the cheap garbage over and over again and begin to enjoy the things you have, even as they save you money, time and hassle in the end.