As a fellow shortie, I find that 3 pounds can make all the difference in the world, especially with my work skirts.
And, yes, I really, truly think maintenance is harder than losing weight was (for me). There are so many reasons for that, and it IS worth it, but it's hard. And now that I'm trying to lose 5 pounds to get back to goal weight, it's even harder.
But to "give up" and be overweight again, with all that that means? The health effects I was already having at age 32? To lose my fitness and never run again? To have to buy bigger clothes again? No, to all of it.