Not necessarily. Hemorrhoids aren't really dangerous, but can be very uncomfortable and may be a sign of other problems such as a poor diet (low fiber, low water, etc). Rarely they can be a sign of liver circulation problems. See your doctor to make sure you are up to date with screening labs, colonoscopy, etc. Treatment varies from topical creams, stool softeners, or even banding or surgery.
No. Get them fixed.
Not dangerous. but can be a nuisance with pain, bleeding, and hygeine problems. Majority DO NOT need surgical treatment. Eat fiber, increase fluids to 80-100oz per day and cut out caffeine and alcohol and most will settle down. Hemorrhoids were designed to last a lifetime unless you are abusing them with constipation/diarrhea. I also agree to get checked for liver disease as what you think are hemorrhoids may be.