Hello barbfe
I completely agree with you. I, too, turned 70 this year (in April) and I also exercise each and everyday. I also use an stationary exercise bike and resistance bands as well some Pilates and some repetitive exercises like curls, squats and hinges. If I didn't do stretching exercises each day I would be stiff as a board.
I am a type 2 diabetic, have hypothyroidism, sleep apnea and Dilated Cardiomyopathy with LBBB resulting in stage 4 CHF. I also have a biventricular pacemaker, complete with a defibrillator since I am at risk of experiencing sudden cardiac arrest.
None the less, I have found regular exercise has not only improved my overall quality of life but it also gives me a sense of achievement; a sense of still having control over my life. I pay attention to my heart rate while exercising so as not to "push the envelope" with the defibrillator. 😉
Even though I have heart failure, it is important to keep my cardiac system as healthy as I can and exercise, along with diet and sufficient good quality sleep, help me achieve that goal. It is my wish to remain as physically - not to mention, mentally - independent for as long as I can.
Wishing you good health.

Went to PT yesterday. Got a through exam was given 3 exercises to do at home to start with. Will be going 2x a week. We are working to improve strength and balance. Thank you for your input !