Can i trust on etherium project
I want to hold it for long term 5-10 years
Can i use hardware wallet (ledger or trezor)?
5-10 Years it is unpredictable in any kind of invest , don't be silly asking about 10yrs long invest please.
For Now ETH is a great invest , but not only ETH .... BTC ,DASH and a few others . Can give nice maybe even Huge profit within 15-20 Months.