You shouldn't be worried about your height. The average height for men around the world is 5' 6".
Yes, some women like tall men just like some men like tall women. It's a personal taste thing and not generally something you can say "all" or "most" women want. In fact, here's what women around the world rate as the most important and attractive attributes in men (in order of importance):
3. Sense of humor
5. Masculinity/Real Man/Alpha Male
6. Conversation Skills
Notice a few things: First of all, your looks (which includes your height) is down at #8 on the list! What a waste it would be if you were to focus on height and not realize what's really important, don't you agree?
Second, "power" ranks as #1. What is power? Answer: it depends on what woman you ask! Some women see big guys as "powerful". Others see men that are brave or outspoken as "powerful". Others see men that are emotionally stable as "powerful". So, even that is based on preferences.
When you talk to girls about how important height is, you bring it to the forefront. Yes, some women claim they like guys that are 6-feet or taller. Some claim its 5' 10" or 5' 5" or simply "taller than me" or whatever the personal preference. However, that's not the question to be asking! The question to ask is "What's MOST attractive to you in men?" That's when you come back to the list I've already given you.
My mother had a great saying (she was only 4' 10" tall by the way!) She used to say: "It's not your height, but your stature that's important." Trust me; even at 4' 10" tall you never questioned her "stature".