I keep a bitcoin in my personal wallet and for me it's also very safe, even though I keep it for years, and for me it's also our easy way to trade.
Same with mine too.I preferred to keep my coins in my own wallet where i have my own private keys.Atleast i know it would be more safer than just keeping it in some exhanges and pay some amount.There's no other wallet that is more trusted and safer than your own.Of course we should be responsible too to keep it secured all the time.