CMV: reincarnation makes no sense

Humans are just large clumps of cells and other materials. that grew out of single sperm and egg. Theres no "consciousness" theres simply brain activity. After you die you are gone/ dead, brain activity stops. your flesh/brain/"you" slowly rots and turns into dust. Theres nothing that could magically transport from one body to another (miles away I presume hahaha). Theres no "soul" "spirit" or other bullshit.

I mean whats make us/brain cells special deserving of reincarnation from other cells? from skin cells, heart cells, blood cells etc? do skin cells reincarnate? nerve cells?