Interesting that both sides feel so passionately! Same with my daughter and I. I love it and she hates that it reseeds everywhere! Usually when I find a seedling I dig it up and put it with others because a mass planting is STUNNING!!!
I don't find them hard to pull out if you don't want them either. I use them for fillers in my bouquets for market. Last year I had extra and stuck them in a vase and sold like hotcakes! Or course that's different than the plant.
By the way, my daughter asked me to get her some seeds again this year, since she has more room she wants to grow it again! LOL
