Viagra sex is never quality sex. You need to wait and wait for the arouse. After that, You need to hurry up to catch the tide. Acutally a cucumber can perform better if you don't care age.
Then, A young man can be great fun. You will be the lead of a adult movie.
With a old man, you have to help him to lay down, and help him to sit up.
Are you sure you want to go 50+ guy at this time of your life?