Flew American Airlines 2 days ago and my bag was 55 pounds (5 pounds overweight). They charged $100 in addition to the $30 that I paid to check the bag. Would have been way cheaper to check a second bag.
We’ve been burned like that a couple of times and learned out lesson. We mainly fly Southwest now and they have a good baggage policy. Most of our flights are under two hours and we make do with carry-on bags.
Depends on where and why you’re going. I used to ship instrument, clothes, etc, via UPS there and back and carry as little as possible. Cheaper and easier.