Why Is It?

I always kinda enjoy threads that start out "My car won't run" or some such, then open the thread and they've replaced several things with no progress.....and NO diagnosis. When did that become a thing? Do people just like spending unnecessary money? Maybe they would adopt me? I mean seriously, WHY won't people learn to do some simple diagnostics? I guess it's because they want to fix it in a hurry, but in the end, they spend twice the time and money to finally find the trouble and every now and then you see people actually GIVE UP and sell the thing. When did people start not having any sense?
A lot of this started with the internet, I warn people all the time about following internet advice. Diagnose the problem and fix the problem. Don't use the parts cannon, Buy a factory service manual ect. So many experts on the internet with parts cannon advice. Maybe we should post up some really simple diagnostic routines. Step 1, step 2.