My question now is, as of the moment, are there any cryptocurrency as of the moment that is worth investing?
BTC and ETH are always worth investing, especially in a "normal" market like this. By normal I mean not in a crazy bull run like we had last year. Inflated price during a bull run is not a good buy definitely. Why do I just recommend these two? Well because I see every other altcoin just as speculation tool instead of being used as they should be.
is the bounty campaign here in the altcoin still worth of investing time?
It's just a waste of time now, IMO. There aren't much bounties that pay a lot like few years ago.