I'm sorry for the pain and your foot problem but I loved that despite how bad you felt you were able to be empathetic and give a little happiness to others. You were very kind to that couple.
I was always obsessed with being prepared for the future. At my parents' house, they had to go without some things, even though my sister and I never lack anything. But I always tried not to go through the same thing and don't have to give up on things when older. And I worked hard for it. But unfortunately, we can't control all the circumstances around us. At this point, I would have liked it not to be a worry, but it is. And I continue to work so that it is not.
I hope your foot gets better soon as your mood. :)
A little preparation is better than none at all and if it brings a feeling of comfort, no matter how small, than it's done its job. Furthermore, most often, it gets some momentum going and one will find that carries forward into more preparation. I don't see a downside.