I would be afraid to put everything on my resume for fear of appearing too old, or “over the hill” in the eyes of an employer. But I think If you’re a worker over 50, and on the job market, one of the things you want to do is leverage your experience. This can be one of your major advantages, and experience is one thing that can’t be bought or learned out of a college textbook.
When you change careers after you've established yourself, a pay cut often comes with it. If you're not willing to face that, career change is probably not for you.