Steve, the loneliness is natural after so many years of married life. You will get used to coming home to an empty house and probably even start appreciating being able to do what you want. It takes time to get used to change but you will get there. We live in an age of Netflix, Hulu etc. Pick a show and start binge watching it. Or pick up a hobby you always wanted to try. Or get some games on your phone or a video game console. Listen to podcasts. Watch YouTube videos. Go for a walk. Keep your kind distracted and it makes it easy to get past the loneliness. Time and space will help you heal. Take it one day or one minute at a time