Most of the time, the only way you can get your Bitcoin hacked is if:
A. You occupy the same address too many times.
B. You have tied personal info with it.
C. You don't occupy some type of antivirus/malware/malicious adware software.
I think using one bitcoin address or same bitcoin address for every bitcoin transactions will not make your bitcoin stolen. unless you do things like download at the links are not in the know. it may contain malware or you fill in the data and password in phishing site. where the password was the same as the password of wallet
it is often the case and make a lot of people lose their bitcoin because stolen