If i put my savings into a bankaccount im 100% sure it will be worth less next year.
Investing my savings into BTCitcoin brought me way more then i could have ever hoped for. I dont trust banks with their government issued money with my savings. I believe in decentralised limited supply. Thats why i invest in bitcoin.
I pay with fiat, save in BTCitcoin. HODL 4 life.
Actually that's the main reason I hold bitcoin right now. Not because I expect to become rich one day. (Well, tbh, I expect this too who doesn't?)
I don't trust banks. I got some of my money in a bank collecting interest profits but I still don't trust them. Sending/Withdrawing/Depositing, everything needs paper work with the banks. I don't need to deal with banks anymore when I do stuff with bitcoin. I can carry it around with me, I can send it to somebody, whatever. I don't need permission from anybody.
And right now bitcoin has the most active dev team and community so that's why I hold btc's but not some other random shit coin.
I have some of my wealth away from banks' touch and that makes me happy.