multiflyer,
You hit the nail right on the head. I found this out when I had about 4 years of flying in. I had several crashes in a row and found myself with only one plane left flying, my trainer. It was either stay home or take the trainer and fly that, so I took the trainer..... duh!!!!! I wound up flying that for 3 weekends until I got something else back in the air. I found that flying a trainer once your skills have developed to more advanced planes, the trainer becomes a absolutely fun plane to fly. It's great fun flying acrobatics maneuvers with a trainer. One observation I have noticed when I fly a trainer. Remember when you were learning to fly?? Flying a trainer you probably said to yourself that the plane was fly SOOOOO fast, but now when you fly your trainer you ask yourself "How can a plane fly SOOOOOOO slow????!!!!!!!!!" It's great fun. I still have the trainer that I learned to fly on 10 years ago. It's got over 500 flights on it, it's been recovered twice, the motor is almost completely worn out with nill compression, and it's got the oldest servos I own in it. But I still take it to the field several times a summer just to have a fun, slow, easy flying day with my trainer. Another great thing about your trainer is that they can be used for improving your skills on some maneuvers. Since the trainer flies slower, and has a tendency to want to self-correct, you have actually fly them through some maneuvers (almost forcing it sometimes). Having to do this will help you with you other planes to perform the same maneuvers.

All I am saying is don't give up on your trainer just because you have soloed. They still have lots to offer.

Ken