If DBF and I replaced the tube after every flat, we wouldn't be able to afford to eat.
These little buggers--goathead, punctureweed, whatever you like to call them--are a plague, here. We use the "traditional" glue kits, and if you take the time to do them right, they work just fine. I think it's a very good thing to know how to do.
I'm also of the "spare tube on the road, then patch at home" mindset, but I do always carry a patch kit just in case (even on my relatively short commute), since I never carry more than one tube on a normal ride. I'll confess that I'm not particularly good about doing it right when I get home, though, and since I often don't have anything to mark the hole with, I forget where it was, and then it sits....... and then I buy another tube. 
And since you asked specifically about skinny tires, my commuter tires are 700x28, and my road bike has 700x23.
Last edited by badgercat; 06-23-2011 at 08:56 PM.
'09 Jamis Satellite Femme | stock Jamis Road Sport -- road
'08 Trek 7.2FX | Terry Cite -- commuter
'77 Raleigh Grand Prix mixte | stock Brooks (vinyl) -- just for fun!