I'm sorry, but I just don't "get" flowers.
They look nice, I guess. But plenty of things look nice and don't require as much maintenance as flowers. When someone gives me flowers, I just feel like I don't know what to do with them. I don't want a gift that all I do is look at. I'd prefer a gift that I can do something with, like eat it.
Plus they die, especially in my hands. If you give me flowers, you are basically giving me something that will almost definitely rot and die within days.
But I do feel like I'm a little bit odd in my dislike of flowers, so I'll generally at least pretend to like them in social situations.
I was at a park with a good friend of mine over the summer, and there were all these flowers blooming everywhere. She was getting really poetic about it.
Her: "Oh my gosh, look at those beautiful purple azaleas!"
Me: "Oh wow!"
Her: "And look at those [insert adjective + name of other kind of flower]!"
Me: "Wow, so beautiful!"
Her: "Oh wait. I forgot--you said you don't have any interest in flowers. You don't care about any of this."
Me: "Yeah, you're right. None of these flowers interest me at all."
At least I was willing to fake it though.