How and why would the end of bitcoin (and any other cryptocurrency) occur? Value decrease? Legality issues? Different technology/ideas to supersede it?
There are a lot of instances that may occur which may cause bitcoin's death. One of the most possible reason is the continuous banning of it in different countries. Another things is if bitcoin would be replaced by other cryptocurrencies wherein it will steal the spotlight from bitcoin. Though there's a lot of possible reason, we should not stop believing on bitcoin since it has dominated for a long time already and showed its potential to everybody.
yes, prohibiting the use of bitcoin by some countries will have a considerable impact, with the ban being people who are attracted to bitcoin will decrease and will have an impact on continuous bitcoin prices and some people who panic with the situation will aggravate the state of bitcoin.
but for the presence of a new cryptocurrencies that will replace the bitcoin will not completely go smoothly, because bitcoin is still an option for some people to place invest, it will be very difficult to compete with bitcoin, but it all depends on the circumstances,