|Japanese Garden, 50mm lens|
In the days of manual focus, manual exposure 35mm film cameras, the standard "kit" lens was a 50mm. This was almost always a fast lens (meaning it was capable of letting in lots of light with a large aperture) and a lightweight one. For many photographers, it was the only lens they used for years. (Look up the work of Henri Cartier-Bresson.)
I came across this great article about using 50mm lenses with digital SLRs from a Facebook post. Check it out! And if your digital camera uses a cropped sensor (most models), then consider purchasing a 35mm lens for the same perspective as a 50mm on a 35mm film camera.
Get the Most out of Your 50mm Lens