I have several pairs of socks that rarely get washed—no, it’s not what you’re thinking—because they rarely get worn.
The toe seam—I’m sure there’s some technical name for that—is ridged. I’ll bet you’re thinking that’s no big deal, but it is to someone whose toes may go in all directions of the compass. A ridge just adds a hurdle in your shoe that your toe(s) need to overcome.
In the future, my sock purchases will be seamless.