It's not the end of the world to sell your kit. Given the number of threads on here devoted to ghetto setups, it'd be relatively cheap and easy to get back into the game in 5 years if you wanted to. Grab a few brown pumps, a couple of buckets, SS tube and a kettle and you're away. Who knows, there may be matho braumeister version on the market in a few years!
In the meantime, concentrate on those things that you enjoy, and if kayaking is one of them and it gets you fit at the same time, then that's awesome. Good luck with it...