It all depends on your personal balance of risk vs convenience.
Your card details should be secure provided you follow standard security practices. So if you tire of manually inputting them all the time then go ahead.
If there ever is a vulnerability disclosed you can cancel your cards through your provider and have them re-issued. Finally, if you ever come across fraudulent purchases you can dispute them.
It all depends on your personal balance of risk vs convenience.
Your card details should be secure provided you follow standard security practices. So if you tire of manually inputting them all the time then go ahead.
If there ever is a vulnerability disclosed you can cancel your cards through your provider and have them re-issued. Finally, if you ever come across fraudulent purchases you can dispute them.