Amongst other foot problems, I got plantar facitis in my 50's so bad that some mornings I would crawl from the bed to the bathroom. I tried the podiatrist route with the $200 custom orthotics -- they helped but wore out. So I went for the REI $25 plastic-base orthotics, and they worked just as well.
But here is the great news. When you get older and don't use your feet as much, the plantar facitis becomes a bad memory in your rear-view mirror. I'm now in my early 60's and have not had any symptoms for several years. I have also read that this is normal.