Over 850 millions of people use alipay as means of payment mostly in china and i heard lots about wepay as well, i come to think of it that what if bitcoin was been used in their places instead? if alipay and wepay can get to where they are today then altcoins have all the chances of survival as well. Wepay and Alipay are just online payment solution, crypto can do better.
Real use cases plus real life working products, let these two be your main focus when picking altcoins to invest your money on, do not listen to those saying 'dump altcoins for bitcoin' when you are holding solid altcoins
I think in order to use in payment, BTC is not a reasonable option. Currently BTC transaction fee, processing time and its volatility is very high, which mean we need another altcoin for this purpose. BTC is an option for asset storage.
to use bitcoin as a transaction may not be suitable at this time, because the process is quite long and the fee is quite large. it's good if you make transactions using stable coins and also look for coins that have a good speed to make transactions