I replaced my 18-55mm lens (which isn't good, but isn't bad) with a Tamron 18-200mm lens. For me it's perfect as a day to day lens, the focal range is just awesome.
And for just over $200 a bargain.
If I go on a walk I need no other lens, except maybe my Tamron 90mm macro if I'm keen.
So if you buy the camera body only and the Tamron for your every day lens, you'll be very happy.
I'm assuming you're on a budget like myself here. If you have the $$ then there is some lovely L glass out there.