Kinda depends on what job you are looking for. At my level in my career field, having 20+ years experience is a high dollar commodity.
Of course, if I switch careers... Walking as a 50+ year old White male would probably put me at a disadvantage in some professions.
A big factor in this:
Thirtysomething year-old managers are not confident in managing older and more experienced employees.
Yep, some companies want to portray the youthful image but in my field where performance matters my decades of experience and results get me a premium.