You'll probably look at your transmitter one day and think "All I've ever done with the wiggly bits is move them a few degrees away from the centre position. What happens if....?" The trainer that not so long ago was a handful is now becoming a pussy-cat. You'll think "I want to do this....

Hopefully, you'll want to improve your flying skills and go for Silver and Gold Awards. Chances are that your trainer is not going to be capable of flying the manouevres that you want but that shouldn't stop you trying to improve. Somewhere along the line, the model you are currently flying will prove inadequate for the accuracy of flying that you're looking for and to continue to improve, you'll have to upgrade. Very roughly, most sports models are capable of flying a Silver schedule while you will almost certainly require a much more aerobatic aircraft to perform the Gold.

Even if you think "I want to build and fly Scale models only - I'm not interested in aerobatics", you should still learn to fly them. The guys who demonstrate their scale models most effectively are those who can also pull an aerobatic model out of the car and make it perform well.

You shouldn't consider having only a basic trainer as an obstacle to improving your flying skills. Instead, consider a more aerobatic model a reward for having persevered so far.... (May your wife be as understanding as your fellow fliers!)

It's very important to remember that just because you don't have the latest "Gee Whizz" gear, you can't make a start. Spending a fortune on models, radio etc. is not going to turn you into Chuck Yeager overnight - or ever. Only hard work and practice will do this. Always work with what you've got and when you're absolutely convinced that you have gone as far as you can with your current gear, then splash out. You're much more likely to see the benefit.