Why haven’t I been blessed with a dream of Rasulallah despite my devotion?

By the Mercy and Grace of Allah, i offer five times salat daily with jammat, i have a beared, wear topi, enjoin tableeghi jamaats and try to follow as much sunnahs as i can, but never have i ever been blessed with the sight of rasulallah in a dream. I sometimes hear about some people who have just started practicing the deen and that too for a few weeks or so and in couple of weeks he is blessed with such a blissful sight, and to me many years have passed and i havent had such a dream. I do not mean that its my right to see the prophit of Allah in my dream or that i deserve it, on the contrary i feel i am quite a sinful person, but i want to ask 1) is there something that i am missing in my ibadaats or ikhlaas? do i have to do dua or wazeefa for it? 2)Does seing the prophit in the dream means that a person will be righteous through out his life? because i have seen people who have had the privelege of a such dream but they now rarely offer salat. 3) is it so that every pious person sees the prophit peace be upon him in dream? Does every alim, mufti, sheikh sees him in his or her dream?