I suppose if your getting bored, that might be solution, especially if your physically fit. But boredom isn't an issue for me, and getting more creative to make due with one lens is fine if your willing to settle for what that one lens can do.
My goal isn't to say master a specific camera or lens, nor to be super creative. My goal is to enjoy taking photos, and to capture scenes or subjects that interest me.
Sure I want to take the best photos I can, learning as I go how to improve my skills to get better shots. But the main objective has been and continues to be achieved. I'm having fun, taking photos of things, scenery, and people that I like. I use whatever lens and camera I can afford to help me do that, and get the photo I see in my minds eye. A lot of gear that I get to do that can be a trial and error process, since I don't know exactly what will do the job at a cheap enough price for me to afford. So now and then I get something and find out that it isn't what I'm looking for, and I get rid of it eventually.
This might surprise everybody, but even my I wants have toned down since I first got started in photography. I'm no longer looking for the biggest,baddest,bestest anymore. I would sorta like to complement what I have right now, since I'm loving my D300 and have no interest in getting rid of it. It suits me, and my thought was maybe one day to add her big sister the D700 to go with. I don't really have a long list of lenses I want either anymore. A wide lens for the D700 someday, and good walk around zoom D lens that goes up pretty high in fgocal length, and maybe a high focal length prime. Well and 35mm d lens that is very sharp. But otherwise I think I have most of what I need/want right now.
Now this might change as I learn more(more or less), but I'm having fun with the setups I have right now!
I say as long as your enjoying yourself, having fun with taking photos, then whatever setup and plans your following are great!
I read this week the story of a man that stated he got bored with photography.
Found it:
3 Reasons Why You Should Shoot with One Camera and One Lens
He then rediscovered the one lens with one body and got motivated again.
Primes interact with you in a different way, they play with you, they push you. A zoom can be handy, practical, etc... and boring.