My 14 year old son does not want any contact with me, the father, should I still have to pay child support, I have been paying for 14 years.

Yes, visitations and custody have nothing to do with child support.
You still have to pay it.
Child support isn't about since you don't want me in your life I am going to withhold your support.

Yes, chld support is not a payment to get to see the child. It is a payment to help the mother pay for the expenses of your child.

If there is issues you may ask the court to get cousling to help him adjust to visits or other issues,

Why does he not want to visit ?

But the simple answer to your question yes you have to pay anyway

As said YES you still have to pay. You made the kid you have to pay for the kid. Support and visitation are two completely separate things. Has he told you why he doesn't want to visit?