Maybe our first reaction is that it's such a shame that roses have thorns that could hurt us this way. Why do they have to do that? All we really wanted to do was pick them and love them and then watch them slowly die. Why would a such a beautiful rose take offense to that?
Okay, let's get serious. Why do roses really have thorns? Is there a big secret behind this, or is the answer so obvious it might just poke us right in the nose? Let's examine the answer to these questions just a bit.
Roses happen to be beautiful to look at, fragrant to smell, and sweet to taste. All of that would most likely attract all sorts of creatures great and small, right? Right! So, all of these differently sized creatures would obviously be going up to the roses and looking at them, smelling them, and tasting them. All of that would be pretty rough on the rose plant, wouldn't it? That's where the thorns come in.
Rose plants developed these thorns after awhile of this abuse so that these creatures would leave them alone. It was the only way the roses had to protect themselves from being destroyed. Without the thorns, the roses wouldn't last very long. So, you guessed it. The thorns on roses are a defense mechanism to keep them from being harmed.