I started centerfire shooting/hunting with a .30-06. I shot maybe a hundred woodchucks and crows with it and shot many deer as well.
Then, I discovered the .270 Win, simply because the club where I participated in turkey shoots (targets) banned my .22-250 and I wanted the versatility of 90 grain to 150 grain bullets for combination target, varmint, range, and longer range deer.
After falling in love with the .270 Win, having my expectations eclipsed, I gave my fantastic .30-06, Rem. 700 to my son and haven't looked back, at least not much. The .270 Win has the recognized advantage of putting several bullet weight/powder charge loads into very close POI out to over 100 yards.
That is worth a LOT to me, because I may be using light target loads behind Sierra's great 90 grain HPs and the next shots may be at a deer with full-power loads and never need to change scope settings.