Just what is the purpose of a wood tick? I understand a lot of the strange creatures that God put on this earth, but why do we need wood ticks. My daughter called last night and her 3 year old had one in his hair. It was quite an ordeal to get that obnoxious little thing flushed to the world beyond. I remember one time I went on a fishing date and when we got back there was one on my arm, that my date got to release with a hot match. The next morning I found a fairly engorged one in my hair. That is almost enough to make you never want to fish again! So please will someone tell me, why do we need wood ticks?