Sheldon and Penny

A lot of fans ship together Sheldon and Penny. There are a lot of fanfictions, fanart and just general pages about it. People like to imagine the pairing together due to thier high on screen chemistry and scenes that make us chuckle and think of a world of where they might have a relationship. Other fans find Penny to be to much like a mother/sister figure to Sheldon or infact love the pairings of Leonard/Penny (Lenny) and Amy/Sheldon (ShAmy) to much and don't want them to forfeit the relationship for something that may only be a one night stand. Whats your opinion?