The neurotransmitter that is primarily associated with the feeling of wanting something is

The neurotransmitter that is primarily associated with the feeling of wanting something is Oxytocin.

Explanation:

Neurotransmitter:

A neurotransmitter is described as a chemical messenger that coordinates signals among neurons or nerve cells, and other cells in the body.

Oxytocin:

Oxytocin can act as a hormone and a neurotransmitter. It is generated by the hypothalamus and performs a part in social attention, bonding, wanting something and they play a role in the response to the emotions.