I was telling my friends about bitcoin for almost a year and they decided to enter crypto world and buy some bitcoins.
Not much, 50-100$ worth bitcoins just to start with it and to see how it works.
But here is problem - if they buy bitcoins for 100$ they will get that minus 25-30$ fee and they will pay fee for next transaction, so their 100$ worth bitcoins will become 40$ worth bitcoins. How to explain them this??

Is this really what bitcoin become? Currency used for miners so they can earn more money?