I really feel for you. My eyes watered when I read your post. A PC post has never affected me in this way. I can really empathize with you and your situation. There was a time, I was refused admission into a university so I know of the profound disappointment that you are feeling.

Please remember, there are always options. Many students take gap years, travel, work, and/or study part time. Some work for a few years and then return to school. Returning after the age of 21 is very common, now. I was admitted at the age of 33. Most mature students excel because they have life experience, belief, and dedication that younger students lack.