Should you quit? SHOULD YOU.... QUIT???? Oh for heavens sake.... NO, NO, AND FINALLY NO. Here is my simple opinion and it really pertains to my thought processes only. What you choose to do is totally and completely up to you. I agree with most of the comments regarding your question. I am now coming up 52. I have been flying for about 18 years. Not all completely successful. But not all completely failed either. I taught myself and it was very difficult. However, I did it. I would have liked to have a friend help, however did not have one available. Some people can. Most can not. I feel a buddy box with a friend that knows what he is doing is truly the best way to succeed. It gives you the chance to relax and really "GET" what is going on without the complete risk of losing a plane. It will help build your confidance and it will sure set your nerves to ease. I would say, have a friend help you with a buddy box. Here is the part that is REALLY, REALLY, REALLY sweet. One day you will be flying along, (buddy box of course) and it will all "JUST" click and come together. Before your mental processess can even realize it, you have just flown the entire flight, from take off to landing, totally and completely by yourself. The power....the absolute adrenaline pumping power you will get from that will "Launch" you head first into "I can do this". "I have done this"! And it is a sensation you can't easily forget. From that point on, you will find a surge of belief and "Instinct" will become a second nature. This is not to say you will not have an accident some time down the road. However it does soften the blow when it does occur. For me? Flying is all I dream of. It has been with me since I was a boy. I will never lose that power and belief of doing something I love. My hope is that you will find encouragement in these simple words to restore your desire for flying. If you want to do something bad enough, You WILL find a way. Should you quit? Na.... keep at it. Keep 'em flyin. YOU CAN.... DO IT.
"If'n ya ain't inverted, Ya ain't doin' it right.