Yeah, guitar is more versatile. It's good as a stand-alone instrument, which makes practicing more enjoyable. Also, if you're out trying to impress people (girls), learn guitar and pick up a few easy riffs. That way you can play "Tears in Heaven" or some Dave and all the sudden you'll be the best thing since sliced bread.
However, bass has just as much "depth, scope, and potential" as guitar.
Being able to make clean notes on a bass guitar is something that takes a while to master in itself. Knowing your chord structure and scales on bass is a zillion times more important than knowing your scales with guitar (exception: soloing). Being able to fill notes outta' nowhere into a song makes the song (those silly guitars just stay on one cheesy chord, bassists are beyond that). Slap/pop is about the coolest thing in the world, a completely alternate dimension to the bass. I focus in that a lot, funk is good. Bass is much more intimately involved in the music, which I like. Lots more, but I'm boring people now...