Chuckie....sounds like these poor old gals are tired...and someday you may have to work until you are 67! We had one older gal that we just worked around...she was the same way.
As for rotating...I think that if they have put in alot of years, why should they rotate? At many institutions after so many years you have a choice of no weekends or no rotating..geee..which would I pick!
I work with alot of people that have been in the same place for 20 years or so and they are in the 40's and get crotchety too...and I have been there for 15 and get crotchety...and I am sure that the 22 year olds coming in have much of the same as you to say. I think that it comes from new grads that think they should have every holiday off, every summer vacation they want, etc...and these people have been there for years and paid their dues! No other profession treats their elder employees as badly as nursing...at least that I know of!
So, patience is a virtue...and listen to them, you may learn something new!