So what is your goal? Your genes are in already loads of people. No matter how many kids you have your specific combination of them will be diluted out of existence in a few generations.

..

This is very hard to quantify and I certainly have no data to support this, but; I suppose, in this era of civilization, your actions in life, your influence on society and culture, and memes you propagate, rather than genes, will have a much greater influence.