Do I need a screen protector for my tablet?

[Lily]

I'm getting a Nexus 7 tablet for christmas, apparently it has "Gorilla Glass" will it scratch easily? It's just I like the feel of glass.. also does it make the display look dull? I have a phone which apparently has gorilla glass and it only has minor scratches and you can hardly see them (Only if you tilt the phone onto light and look closely).. ive had it for a year and its been under sofas and on the floor (With no protector). Would it protect it if I dropped it? (More likely not to break) because I watched some videos on youtube and their phones didnt break with a screen protector on but did without.