For 20+ years I had my 7mm RM and didn't feel a need for anything else. Now, 33 years after getting that 7mm RM I still don't.
At the moment there are four .30-06 rifles in my safe.
C H - I said something similar earlier in this thread. I went for a no. of yrs. w/o one also and I don't NEED an 06 today BUT With ALL things considered the 30.06 is a 'safe haven'.
An 06 in rifles is
like gold in your portfolio. It's never worthless.