Its all ease with using crypto 100%
1) Gone are the days when i have to get down to the bank to deposit money into my savings account,in my country,banks are always very crowdy and most times you have to be on queue to safe money or withdraw
I agree, the only drawback is that you need to have internet.
2) No one will know your worth,which means you are saved from preying eye or criminals who can rob you of your cash in your home.
Good for you, but I have seen some people bragging about how much they worth specially with their bitcoin and that is very wrong because they can physically rob you anytime.
3) I can move thousands or even millions of dollars with ease to my bank account without leaving my house,so stress free
Yep, it will cost cheap. Lucky you if you have millions already.

i wonder who wont want to use crypto because its just way better and safer than carrying big cash to the bank apart from the earnings you can only get when you invest in good coins.
Its because crypto are fairly new and others doesn't want to take that risk. We are what? barely 10 years old so lets give it some time and probably in the next 10 years we will see it being adopted.