I have a similar yet different problem myself... I avoid taking on challenges in life, because I'm terrified of boxing myself into a corner. I always want to have the option of running away, and like to set up situations so that I'll never be trapped in anything, but I rarely DO run away from anything, because I'm too afraid of running out of resources or something if I do.
Anyway, I think it's natural that you would want to run away... you've been in a situation which, while comfortable, isn't really exposing you to a lot of new experiences. Se wants out, but Ti/Fe feels like it should stick with this. I think the stability and "pillar of the community" thing actually comes more naturally to Si/Ne users.
I think that sooner or later, you'll need a change of scenery. Probably feel a need to upend your whole life... because ultimately, what you enjoy is savoring new sensations, new experiences. Perhaps you even aspire to visions of the future (inferior Ni). But none of that gives you the natural stability of an Si user. You'll always be restless inside. Even I am, really, with my inferior Se... I just don't usually let myself act on it, and content myself with fantasies of how things could be.
However, the question... should you run away? Well, only if you're ready. You have a good thing, but a good thing can turn into a nightmare if you let it. Something good can start to feel stagnant and dead, which corrupts it. Ideally, it would be best to try and work in as many of the things you want to do into your life, without having to change your situation too radically. If there is a way that you can have both stability and the variety that you crave, that would be ideal for you. Wouldn't it be awesome to have a lot of money, and own several homes all around the world, that you could just go and visit any time that you pleased? That's not realistic for you (or most people), but it certainly is a nice thing to think about.
Anyway... I'll just leave you with two songs that popped into my head:
[YOUTUBE="http://www.youtube.com/watch?v=kx26NQemy6E"]Leave no deed undone[/YOUTUBE]
[YOUTUBE="http://www.youtube.com/watch?v=R3UGbFtNVbA"]Escapist[/YOUTUBE]