I have a herniated disk. The pain is not bad. Is a laminotomy surgery worth it?

No. The reasons to consider surgery for a herniated disc are neurological deficits such as weakness, balance problems, bowel/bladder issues or severe pain that cannot be otherwise controlled. "not bad" pain by itself rarely requires surgery.
Maybe. Sometimes the pain is tolerable and sometimes it gets worse when you try and increase activity. If you can do everything you need to and the pain is not bad (and your nerves are working normally) then don't do surgery.