When you see (2) and (3), your intuition refer to "the (that) road at home" rather than "the way home (from another place). So you want to change it to (1). But (1) gives you a feeling that you can't tell what's wrong intuitively adv.. The Way to Home you have mentioned do feel better.
At last it's come home to me how much I owe to my parents and society
=it's come home
=it's the way home
=the way home.
=(4)the way to home.