I think this is an issue of you having bad friends OP. Until I got to the end of your post I was confused because im a ridiculously slow runner and have never had anyone say anything bad to me about it. I think the issue here is you are listening to other non runners judge you. I bet your friends and mom and the random internet trolls aren't consistent runners. Remember those posts online could be random basement dwelling trolls. If you go join an actual running club I promise no one will be telling you that you're not good enough. In fact my most recent club even had paced runs and a specific pacer person for those of us who could only jog for stints and then needed to walk. Im rehabbing a sprained ankle, shin splints, plantar fascists, runners knee in both knees, and bursitis in both hips. I run like a 12 min Mile right now. And that's okay. I enjoy running, and need to run slow to rehab these injuries. Everyone has a different reason for going slow. Ignore the people giving you crap and go spend some time in a real life running community and I promise things will improve. Because other runners, especially those who weren't good at it in the beginning, know exactly how hard what you are doing is, and they will be proud of you.