BTC has several flaws in usability like
- Needs a locally stored wallet
- Needs a lot of Traffic (at least at start)
- Needs a lot of calculating speed/power which could be used for better things
- Needs a lot of time and no transactions can be transferred back, gone is gone
I think btc has a high chance to be the #1 cryptocurrency for a long time because it is fuly established now, but it will lose to an alternative coin, that is secure and has a higher usability for all people, not only computer people, illegal activities, early adopters, investors/traders.
I just wonder which will be it