Some people, myself included (for reasons similar to yours), believe that Tai Chi^ is just a much slower version, or pace of Kung Fu (for the most part) for balance, Flow of Chi (^, remember), and very many other benefits...gain/keep/re- learn balance and flexibility, etc. I have Spinal Stenosis(cervical), Degen'd Disks, couple of fusions, Ost. Arthritis on top of Fibromyalgia, nearly all for almost 21 years and not even 48 years old. If I were to SKIP/FORGET/NEGLECT my morning Tai Chi + Stretch routine (gets oxygen to more muscle tissues, promoting regrowth of even nerve and brain cells...last info just found out months ago), then I am in too much pain to eat, sleep, smile, socialize, laugh... ALL OF WHICH makes me hurt even more.
Yoda said, "There is no 'try.' Only DO, or DO NOT!" Yoda only said DO. He never said anything about hurry up. I am already on Disability. I am not going to let that own me.
I have some Disabilities. They don't have me. I am not "DIS-ABLED! I AM Michael. I am not as fast, strong, or agile as I was at one time. I CAN WALK and TALK! I can still LAUGH, LOVE, ENCOURAGE, LEARN FOR FREE, AND SO MUCH More! I can also be angry, hateful, spiteful, and blame others for reasons that not even my Doctors have figured out. I can waste my time with negative, hurtful, useless feelings. I could. But I don't want to and I REFUSE TO BE A HATER! Martial Arts is more than just physical movements to be memorized. In fact, the mental and spiritual, the Chi (Qi), THAT is the hard part. You want to see what is after 1st and 2nd Black? A TON of "Internal" that is not easily taught and is even harder to learn. You, I, we. We are more. So? Do, Be, Become. MORE. ~Michael
^ (I know: several spellings, more complete/longer ways to have written it, but it's simplified for everyone's benefit)