That really depends on the coin which you invest in, if it is a decent project and is hitting it's milestones and gains some kind of adoption then yes it is worth it, if you end up supporting a pointless pump and dump coin then long term this will not work out.
Good idea but always choose the right one. I mean the altcoin which has more volume because we can decrease the risk.
We know not all altcoin is good for long term because many of them just get hype and nothing for long term. The hype is sometime for short term so always becarefull.