I used to build my own computers but now that is just too tedious. I bought myself a HP laptop for about $449 with 12GB RAM from COSTCO and it is my main computer and I am extremely happy with it. Switch to a laptop for convenience.
I can buy a rebuilt HP laptop with new hard drive for $100 at a non profit in my city. If you are over 60 you qualify for the deal, even if you have millions of dollars in the bank.