How much are you making per hour? That's A.
How much could you earn doing something else? That's B.
If A > B (not likely) then by all means, keep doing it.
If A < B then do B. It pays better, you'll make the same amount of BTC in less time, so hey, free time! Warm up that console, go outside, whatever floats your boat. You earned it!
If B = 0 (that is, you can't think of anything else to do to make BTC), keep reading the forum. There's bound to be something else that gets you paid better than faucets.
TL;DR: usually, faucets are not worth the time, because their pay is very very little.
That depends, if you have a high number of referals on freebitco.in, you can get a really goodamount of btc.