Sitting here in close-contact quarantine I have had a lot of time for self-reflection and have seriously pondered this question. It didn't take long to come up with my biggest regret.
My Mother-in-Law passed away in May just short of her 94th year. She resided in a LT care facility for about one year up until the time of her death and I believe she was a victim of covid-related isolation. We visited her regularly before the pandemic, but our attempts at Zoom meets during the pandemic were not very productive as far as connecting emotionally.
Prior to LT care, she lived with us for 20 years in an apartment we have on the lower level of our home. That ended after a bad fall and the determination it was unsafe for her to be with us when alone. She had the first alert pendent and it certainly received a lot of action with false alarms. The time she needed it most, however, she did not have it within reach.
My biggest regret is not about me, it's about my Mother-in-Law. My Wife spent a lot time with her Mom in a care-nurse capacity while we were all under the same roof. I should have been more conscious of "Ma's" other needs and and taken the lead with sharing more of our personal time with her. She was a fine woman and I wish her peace.