Context: Try it for yourself . I also factored in the fact that my portfolio should continue to grow even while I ' m in retirement , so it has to be large enough to allocate part of it to continuous growth . I think medical expenses are likely to be substantially more than they are today , since there 's no realistic fix to the health care crisis in sight . Finally , retirement is supposed to be very , very fun ; there 's no point in retiring if it means sitting around and staring at the wall all day .

Question: why did he retire ?
Options:
0. because there is no realistic fix to the health care crisis
1. None of the above choices .
2. because he was old
3. because his portfolio should continue to grow
Answer: 2