Sometimes I see 0.01€ on the street...I take it...is it waste time?
Yes, it is because they will never change and from time to time probably the value of that cent will decrease.
Opposite is with bitcoin(at least at the moment) where people try the luck with small amounts that in future can become valuable.
I'm not anymore into faucets since i don't have time and i'm claiming only few times per week from 2-3 of them, but when i started the value of the bitcoin was around 500$ and i was claiming from faucets that had minimum claim of 1.000 satoshi(sometimes every hour sometimes less).
1000 satoshi at that time was nothing and after some time i was just throwing them away trying to make some investments or trying luck with games.....i lost also the access to the wallet that i had at that time.....but now 1000 satoshi should be around 5 cents and if i still had the access to my account and didn't throw away always amounts like 100k satoshi, i will not say that i would be rich but anyway it would be nice.
And i started when the value was 500$.....imagine who started at the beginning when the value was a lot less.
Someone could just invest buying bitcoins and waiting for the increase of the value but it's different because if nothing change you are just losing your money.
With faucets you're not losing anything except your time(freetime).