1. I have never used a purchase transaction through cryptocurrency, if bitcoin has been authorized in every country, of course it needs to be implemented
2. In general, acceptance of cryptocurrency is bitcoin
3. I am not good at analyzing the market, but seeing that market conditions are less stable, it doesn't seem too good to buy it now
4. maybe the gambling section is very suitable to be applied
Bitcoin is spearheading the entire cryptocurrency space towards the mass adoption we all anticipate yet there are equally good altcoins backing this movement with great support. This comes from the real world uses of most altcoins on the market. Check out on Lympo which is used to gear up sports, DOC.MTC which is used to access primary health care via its app, DIVI which can be used to purchase items on divithreads.com and gift cards from PolisPay app etc.
Never enter market blindly, learn how to do your own TA and seek council from experts.