It depends on what kind of kegs you're talking about. Even if you just homebrew, I imagine you'll want to keg your own beer. While I'm one for planning ahead, when possible, stick to just homebrewing right now. Don't worry about equipment you'll need if you go pro/semi pro. I recently acquired two "pony" 5 gallon sanke kegs...I have no use for them. Don't know how new you are, I've been brewing for almost two years now...and realize, that I have a lot more to learn. First worry about sanitation, fementation temp control...etc.
FWIW, my wife visited a brewpub in PA a few weeks ago. The guys hasn't been brewing that long and decides to buy a brew pub. She said over half of his beer tasted like olives! Yuck!! DMS anyone??
Enjoy homebrewing for now. That's just my humble opinion though.