8. Retirement career
Even when you call it quits from your current job, your knowledge and experience could still be in demand - and help earn you some additional money in your later years.
This is especially true for people in the knowledge sectors such as accounting, medicine, law, etc. - you could very well extend your working years with a consulting side gig. According to 2013 data from the Associated Press NORC Center for Public Affairs Research, 82% of Americans over the age of 50 expect to work in some capacity after retirement.
Next issue - contribute more to retirement fund?