I'm a .30/06 fan, and have been for about 50 years. If you like rifle shooting, there's no reason not to like the '06. Recoil is sufficient to let you know the thing fired, but not so much as to be a problem for anyone healthy enough to consider big game hunting, providing the rifle is equipped with a decent recoil pad, fits the shooter and is not an ultralight. The .30/06 is not as accurate as a .308 is an often heard disparagement, yet German Salazar continues to win matches against .308 shooters with his .30/06 match rifles. Its not a short action. True, but having owned rifles of all three action lengths I still don't understand what the perceived benefit of shorter actions might be, I can run a magnum Mauser like my Brno 602 just as quickly if hitting a target is considered an important element of the exercise.
Versatility is often touted as the .30/06's greatest asset, and while I agree to a point, its not only due to the vast array of factory loads the way most folks think. Anyone who handloads can gain great versatility from any centerfire cartridge from the 6.5s on up, and the advantages of inexpensive Mexican match loads have mostly disappeared since military surplus .30/06 is no longer commonly available. But the .30/06 can do most of the things required of a centerfire rifle with just a 180 gr bullet, and single load versatility is not easily attributed to other cartridges. Similarly, a .375 can do most things with just a 300 gr bullet, but most folks find the big case .375s to be an acquired taste. Now and then I hear that anything a .30/06 can do, a .300 magnum can do better . . . but not without recoil, in similar weight rifles, becoming a bit of a nuisance to the uninitiated. Finally, lets dispense with the claim that the .30/06 is boring. If you find rifle shooting boring, you'll get more out of challenging yourself with more difficult shooting scenarios, than you will by switching cartridges. "There ain't many problems a man can't fix with $700 and a .30/06."