I'm male, and I too like to grow and take of my nails. Though a lot of people assume otherwise, I'm straight as well. I just really love the look and feel of long nails. Occasionally, if I'm feeling brave, I'll go out wearing subtle polishes, but mostly I keep them natural. A lot of people think it's weird but I just ignore them. It's the 21st century and equal rights should be a two way street.
Here are some pictures of my nails: