What is the purpose of sex?

What sort of sex should I do with the mature generation in the "100-year generation of life"? !

Even though "erection power" will not remain, still "pay attention to health "="keep erectile power ", while doing moderate exercise forever, while playing a good grandpa for grandchildren in the second half of life, In the shade I also enjoy women like woman grandson・・・

To the last extent permitted by law, I want to rampage.

Everyone would be right.

It is no longer age we gradually graduate parenting, enjoying sex greatly, life 100 years generation.