i play with my fingers most the time but sometimes i will use a pick. but i notice people saying how real bass players use there fingers and dont use a pick. why do most people look down upon bass players who use picks?

Because "most people" are snobs…No, seriously, you should use whatever works for a particular song and gives you the sound and feel you’re looking for. Like you, I play with my fingers most of the time but I use a pick for harder rock tunes. And screw what other people think.