There is also another way to look at being "Penalized" How many times has a guy missed a shot and got lucky and hooked you or played a poor safety and lucked into a safe against you? Or playing on one of those crooked tables and loose whitey due to a bad roll. Roll out at least gives you a alternative to bad rolls... Loosing a hill hill match to win a tournament to a guy who gets lucky on one shot in the set ruins 9 ball...
Playing well in any sport means no more than winning your share and succeeding your share of the time. Good shots are usually, but not always, rewarded, and the same is true of opponents' errors.
Hitting the ball hard in baseball guarantees nothing, nor does making a good pitch, but both will, in the long run, give you greater success. Some of your good attempts will meet with failure and some of your poor ones will meet with success, and so it is for your opponents.
In golf, landing your drive in the rough works sometimes and sometimes you skull the ball onto the green near the hole. Sometimes you hit a tree and your ball ends up in the fairway with a perfect lie, while other times you hit the ball perfectly and end up in a divot with a poor lie. Poor shots will sometimes win the hole, but in the long-run, executing shots well is what will get you the results. Some of your good attempts will meet with failure and some of your poor ones will meet with success, and so it is for your opponents.
In football, a perfectly thrown pass will sometimes deflect off a player and be intercepted, and other times a poorly thrown ball will be caught. A poorly kicked line drive punt will sometimes go for 90 yards, while a good one may be returned for a touchdown. Some of your good attempts will meet with failure and some of your poor ones will meet with success, and so it is for your opponents.
Part of the fascination of these sports is the luck factor, the unexpected result in which the conventional logic does not hold. These sports make no attempt to eliminate some of these random ebbs and flows because they realize that it's part of what make the sport fun to watch. Watching the best cope with the ebbs and flows in performance and luck is, to me, what I most love about sports.
Pool is no different from these other sports in that god performance is rewarded over the long haul, but not necessarily in the present. For all the screaming about luck, the same guys win most of the tournaments despite the fact that "slop counts" in nearly all events, and in every big event. Those who execute well over the long haul are the ones racking up the major titles.
The cost of allowing a push out on any shot is eliminating pool's most interesting shot, the two way shot. It's a steep price to pay for unnecessary elimination of some of the things that make pool truly fascinating.