A truth about the adult world:

If you want to know why you seem to get no respect, or how you can be such a “nice guy” and still get passed over, it's because society is full of people who need things. They need houses built, they need food to eat, they need entertainment, they need fulfilling sexual relationships. The moment you came into the world, you became part of a system designed purely to fill people's needs. Either you take up the task of fulfilling those needs by learning a unique set of skills, or the world will reject you, no matter how kind, giving, and polite you are.

What do you bring to the table?

Don't say that you're a nice guy -- that's the bare minimum. Pretty girls have guys being nice to them 36 times a day. Saying that you're a nice guy is like a restaurant whose only selling point is that the food doesn't make you sick. A worthy submissive Understands that mere groveling doesn't DO anything for his Mistress. It's lazy. Bring something meaningful to the table.