Because they don't whine about being out all night. 

They don't complain  about always being on the bottom. 

You can rub them all over and they don't tell you to stop. 

It's cool for them to make loud noises around people. 

They turn on with a push of a button. 

Motorcycles will give you a good ride, every time you mount it. 

When you get a motorcycle , it doesn't come with a mother-in-law. 

You never have to wait for a motorcycle. they are ready 24 hours a day. 

Beware of these cycle dudes with their sweet talkin' ways... 
Hey Baby 

Will you help me find my lost puppy ? 
I think he went into that motel across the street. 

Do you believe in love at first site ? 
Or should I ride by again ? 

Yo 
would you like to sit on my Hog ?