Not being prolific isn't the same thing as not loving writing. One of my professors just released his novel after 10 years of working on it. He's written some short stories in between, but he didn't have a lot of them. Sure, some published authors can churn out two to four novels a year. Some take their whole lives just to write one. That doesn't invalidate your writing. The fact that you've taken the time to study it and work at it shows that it matters to you, so don't give up.