Same here, I have nothing against more keys, I just have no use for them now. I wouldn't want to be without a num row, but now that my tilde key switches the right side of my keyboard's home row to numeric, I don't even have to move my hand away to type numbers.
Want a numpad? Switch to a different layout on the fly and have a numpad where you want it. Arrow keys? F-Keys? Why not have those on home row with another layout!
It can get gimmicky, but the impetus for it is that less overall finger/wrist movement == more ergonomic but I'm not fully convinced. Instead, I just prefer everything I can get on home row.