Other than companies which focuses on security and technology to improve their cryptocurrency, what do you think if cryptocurrency is a real currency? Would it be functional, effective, useful, convenient?
If it is not functional as a "real" currency, then there there is no point.
It will be useful & functional once the security and scalability is at its best. Minimal transaction times and costs is why cryptos are so special and interesting to use as a currency. This probably is the most important usecase for the whole technology.
I have got fed of of hearing the same things about bitcoins which are not true at all. You mentioned that bitcoins has minimal transaction time and low costs which is not true at all. If you have expereince of other payment options like PayPal, Stripe, Credit Crads, bank transfers all these are way faster in comparison to bitcoins. In case of bitcoins one has to still wait for 10-20 minutes (as per current situation) for a a transaction to go through. Most of the online deals and payments are done in seconds and thus bitcoin is impractical for those transactions.
1. In the U.S., a bank transfer takes a week.
2. A credit card transaction is done quickly, but the merchant doesn't know for months if the transaction will be reversed. A Bitcoin transaction is also done quickly, but it is final in 10-20 minutes.
3. Bitcoin is great for online purchases because the merchant can safely ship on the same day.