At the risk of starting another controversy (flying for fun v. flying to go places) it is clear that a lot of people give up unless they find a clear objective - just chucking £100/hr at flying the same old route on sunny days will cease to be fun for most, eventually.
So, why not plan long trips to interesting places which you can't drive to? France/Spain are a good start and, assuming you have some means of good navigation, are pretty easy. The scenery in Spain in particular is spectacular.
That's what I do, 150-200hrs/year and nowhere near getting bored. But I would never do it in the typical rental spamcan, even if I could get one which has the access.