Set a date and a route, publish it here. That's pretty much what people have done. Eventually you'll get a few people to ride with you, make new friends, and act as the core of the regularly scheduled ride. Or not, but it won't just happen on it's own.
"If you plan it, they might come."
__________________
If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.