It was not safe to ask me THAT question... but SINCE you did...
And I will try to be as short as I can.
Your presumption is that bowling is a sport, I dont think that is a universally accepted concept across the sporting world.
I agree that the game has changed signficantly from one of accuracy through physical repetition to one of maximum power and the allowing and/or taking advantage of area that is intentionally given. In order to do take more advantage of this area, lane surfaces, bowling balls and bowling pins have all been modified. Synthetic lane surfaces and bowling balls (through several enhancements) have combined to increase friction, which increases entry angle, produces less deflection and opens up (creates more mistake room) the lane. Pins have become lighter and double voided making them topple significantly easier.
You can argue enhancements in every sport threaten them as well. But the integrity of the sports remain with the requirement that thier participants maintain a level of skill. In no other sport, can the technical advances of technology completely out weight the skills of the participant. This has been assured by thier governing bodies... ie., oversized tennis racquets are used by professionals, the super long flying golf ball isnt allow by professionals, basketballs are getting smaller for professionals.
However in bowling, the "sport" has become converted to nearly one single factor... "matching up". The best physical bowler, the one who can repeat shots with the most accuracy and consistantcy is frequently out scored by someone who has much less skills but correctly identifies the correct shell surface, layout and weight block for the condition that is present. Because of this "match up" the lesser "physically talented" bowlers can carry significantly better and create almost unmissable area.
So does choosing the correct equipement make bowling a sport? You might argue that is does in golf as there are many choices. However, in golf (and I am limited in knowledge) professionals determine the proper flex of shaft as determined by swing speed, determine a type of metal prefered and stick with that equipement for long periods of time. While having the correct choices of equipement if golf surely makes a huge impact for the professionals, it is the skill required to swing them that makes the golfer. The golfer does not have 8,10,12 sets of clubs all different and is required to use them in order to "match up" to courses.
Bowlings equipement simply plays too important a role is this "sport". Want some proof... despite the reduction of ABC/WIBC/YABA membership of over 50% in the last 7 years, award scores of 300,299,298,800 have increased 200%. Half the bowlers and twice the scores... If we look further back in time, it gets worse. Lets look at records, I have compiled a spread sheet detailing the records for, men, women, yaba, singles, team game, team series and 97% of all records for all states have been re-established in the past 7 years. Bowling has been america's most participated indoor sport, it has been here since 1890's... but 97% of ALL records have been established in the last 7 years despite the lowest number or participants since the 1920's.
Yes bowling is declining, a chart would suggest that if it continues its current rate, bowling could end completely in about 7 years. Of course that wont happen there are to many of us purists that will continue no matter what. Is there anyway that we can prove that the cause is the rampant scoring. NO. Do I think that it is, No. However, I have to believe that when bowlers are able to shoot 300 and average 200 within 6 months or a year of starting that the easiness of the "sport" has a direct impact as to wether bowlers are retained long term. There is more open play bowling than ever and fewer leagues. Arent leagues competition. If we made the basketball hoop larger, how long would professional basketball remain? If we tilted fairways, tilted greens and made the holes twice as large how long would it survive.
Ok...enough... you see my point. Sorry for this...but you asked for it.
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Getting all the pins I can.