I have no problem what you do with your time or what you want to put in your car.
I was merely stating why some people gives up such as the OP, a change hobby, find a GF or spend their time better else where, that is all really. Im sure bill gate is not spending his time trying to get his latest carpc installed. I think hes better off spending his time making money and enjoying it.
If you feel you can go on for another 20 years trying to install a carpc, well, I dont know, its not really up for me to decide what you do with your time.