According to the "Economist" website the factors leading to the slow down of golf are varied. This report is several months old, so somethings may have changed. Last I read, golf was still in a declining mode in 2017.
1. There is no longer a Tiger Woods bringing new blood into the game. Those pros who are winning these days, are just not popular enough to draw new players.
2. There are easier versions of golf available to younger golfers. Foot Golf, Top Golf, and Frisbee golf are examples of alternate, easier golf.
3. The rule book scares folks away. That, and folks who insist on following the rules. The intimidation factor.
4. Newer, longer courses make golf too hard for some to stick with the game. Newer courses also fall into the slower play, cost concerns.
5. The economy is still some what in the dumps for golfers in the middle, and lower class weekly pay checks to afford golf on regular basis. That, and most folks in those working classes are watching their money closer.
These for the most part, are viable reasons.
I thought it was 44", but just measured it at 42". I just picked up my new driver and it's 47". I feel so much better swinging the extra 2" on my driver, but my 4 wood is a really comfortable club for me off the tee on medium par 4s and on par 5s. Tour Edge Exotics CB4 tour 16.5 with an Aldila RIP x-stiff shaft. Should I stick with what works or try to see what a new shaft can do? I'm 6'7" with shorter arms so I feel like that could actually improve my consistency, but if I'm spraying my driver it's a real security blanket for me as-is.