Why would my taste buds be gone after i have surgery?

Depends: If the surgery involved your sinuses it would be fairly common to have a temporary alteration in your sense of taste which is closely linked to your sense of smell. Some medications and illnesses can also impact this. If your surgery was not involving the nasal/sinus area and you haven't changed meds recently, a visit to an ENT doc would be a good idea to figure out what is happening.

What type of: surgery and/or anesthesia? This is known to be a risk after general anesthesia but is often not mentioned due to the very low rate of occurrence. Check with your surgeon or anesthesiologist.