I have actually been waiting for your comment :)

This is actually a mis-conception. Mass is an intrinsic property of an object. What you actually have in mind here is the'relativistic mass' that is nothing but the energy divided by c2.

This is very correct. It never did occur to me.

I'll also need to read about the Higgs field of the standard model. I am not a physicist but someone who just has a small interest in theoretical physics and I'm glad to have learned a lot from this comment.

Thanks for stopping by.