Pain is a deeply misunderstood and often poorly treated fact of human life. We all have aches and pains sometimes, but when we have aches and pains all the time - that's not "normal."
Aging, weight gain, overuse - none of those things make daily pain "normal." It doesn't matter what you've heard or who you've heard it from - there IS something that can be done about your persistent pain if you find the right kind of care and you're willing to put in the work.