Sorry for your loss. Being pragmatic, no one gets out alive. Simple fact of living is all life eventually comes to an end. We lost my dad 2 1/2 years ago about 5 years after he'd suffered a stroke. "Too soon" or "Too long?", probably "too long" in my dad's case as my mom literally wiped his butt for him the last 5 1/2 years of his life. Not the way he wanted to live. He was never in pain which was a blessing. We all still miss him and talk quite often about the good times before his stroke. He had a dry sense of humor that we all miss. I visited my parents back in the day and they mentioned a hunting buddy was getting a knee replacement. Me being me replied, "Left knee, right knee or weenie?" It took my dad about 5 seconds to catch the joke. A couple of months later we were sitting in a deer blind and he started talking (which was a struggle as he would maybe speak 10 words a day) about the knee replacement. "What type of cast do you think they give you for a weenie replacement?" "Probably a huge cast dad. . ." "Do you think Kathy (buddy's wife) got tired of driving him around so he could show it off!" GREAT memories of my dad!
Try to take comfort in the fact that he's in a better place. You still have many fond memories of being with him, think of them often.
Bruce