@SFPW.
I shared a similar view to you for many years. I refused to get drawn into speculation on when Armageddon may come simply because I'd never been encouraged to serve for a date. I also thought it did not matter.
The problem is that the generation is part of the signs that Jesus gave. It is just as important as any of the other components of Matt 24. The society has tied themselves to a starting point of 1914 and for years used an essentially literal interpretation of the word to engender a sense of urgency and immediacy.
It is now beyond any reasonable definition of the word "generation" so the society is forced to develop some alternative explanation. The problem is now that this definition is not scriptural. It cannot be backed up by scripture. It is not scriptural. BTW - it's not scriptural.
On top of that there is nothing going on that adequately reflects any further outworkings of prophecy. You can refer to general "signs of the times" but look beyond that. Where is the King of the North? Where is there any sign that the UN will turn on religion? Signs that were used in the past such as "signs in the heavens" which were interpreted as the space race and ICBMs have convieniently been moved into the future. In fact, every notable sign that would reinforce progress along the prophetic timeline is now in the future.
Now you can beleive that a bunch of assemblies in the 20s were angels blowing trumpets and you can naively beleive the WTS were the only people in the world to foresee the UN (even though that was post event) but frankly there is not much they can say has come true.
1914 would have been a non-event if WWI had not coincidentally kicked off and therefore is still crucial to the doctrine. You can't dump it and/or dump the generation without blowing a big hole in the entire last days doctrine. What point is a sign if it means nothing?
So carry on kidding yourself that actually you are even more spiritual for not being bothered about the march of time if that's what you really want to do. The reality is the that only thing you are getting closer to is the day of your death. Wake up and stop wasting your time.