Its not a case of size, but rather what you do with what you have. Be who you are, be yourself, and be who you can be.
Someone told me her best lover had less than two inches - and she had been round the block so often, had it been on soft ground, she would have worn a moat.
Now for old hag advice - another friend working in elderly care said it doesnt matter - when you get old and dead, all you chaps look like you have a wee acorn nestled in your lap.