What is the best age to retire?
It's when you feel comfortable in your ability to walk away from a steady pay check, won't miss the social interaction of a work place, & understand that as you age your plans/needs/wants change
What are the important considerations that we need to keep in mind
Good health. Because finances and ability to enjoy the freedom of doing whatever you have in mind to do when retired will be impacted.
After health. As early in life as possible financial planning a must. What worked for us was to plan as though we wouldn't get soc. sec. or medicare. Because we planned that way our soc. sec. started at age 62 for both of us has been used to invest. I retired 23 years ago age 54 my wife quit work in her 40's after getting enough quarters in to qualify for soc. sec. & medicare.