Feeling empty inside. empty nester and single. dont want to join those retiree or senior groups. what can i do?

Volunteer! Travel!: Both a great activities to be with people of all ages, and they will give you pleasure. For example, doing some hospital work will make you feel good, and you will meet many people. Travel with groups. There are many fall new england bike tours that take 30-50 people and visit local bed/breakfast facilities. Same true for wine country. Always look forward to something which excites you!