I have had my Canon 60D for almost 2 years now - and I absolutely adore it. I don't have many lenses - I bought some lenses in the past, sold them again, because I always preferred the 50mm lens. I now have two lenses: the 18-55mm standard kit lens and my 50mm, and I barely ever use my 18-55mm lens. Many people don't understand the joy of having a 50mm lens because they've never used it: I'll explain why so many people cannot get enough of this little pearl.
WHY YOU SHOULD HAVE A 50mm LENS
1. It's cheap
One negative thing about buying lenses is that many (most) of them are extremely expensive. I can look at pretty pictures taken by expensive cameras with luxurious lenses for hours but I'd never spend 500 euros on a lens. When I found out that the 50mm lens existed a few years ago - that there was a lens available for only 99 euros I thought it'd be garbage but I then realized it was a must-have.
2. It's great for low-light photography
Whenever I'm taking photographs when there's no natural daylight, my 18-55mm lens is practically useless: I have to compensate the lack of light with a high ISO which makes my photographs terribly grainy. Because of the large aperture, much light comes in and you don't have to overcompensate with high ISO numbers when using the 50mm lens.
3. Light weight & size
My 60D is quite heavy, that's a fact. I used to have a 18-200mm lens and that one's really heavy and big: my camera became a chore to carry around. With the 50mm mounted onto my camera I don't have this problem, as the lens is extremely light-weight and small. I also feel like my camera's more balanced when I have the 50mm on it: whenever I'm carrying my camera around my neck with a heavier lens on, it tilts a bit to the front which tends to hurt my neck. You won't have this problem with your 50mm lens on it!
4. The bokeh
When talking about the 'light circles in the background of a photograph' people mostly talk about 'bokeh' and the bokeh this lens is capable of producing is absolutely amazing: just look at the photograph above. I took this photograph while the light circumstances were really bad - I only had a dim desk lamp to shed a bit of light, and my Christmas lights in the background. The photograph looks really cool, thanks to the 50mm lens.
5. Extremely sharp
Because of the vague background and because of the fact that it's a prime lens, the objects in focus look extremely sharp. Take a look at the photograph above this piece of text, the photograph of the sunglasses: I think it explains itself.
6. It's great for filming
I recently started uploading videos to my own YouTube channel, but I've been using this lens for filming for a very long time, and it's great: the videos turn out to be of such high quality. Filming with this lens is fairly easy and once you get used to using it, you'll find yourself to have really impressive videos.
As you can see I am kind of obsessed with my 50mm: I never thought the cheapest lens out there could be the best option for me. I now understand why they call it the 'nifty fifty'!
So if you're still undecided on what to ask for Christmas, if you're thinking about a birthday gift for a loved one or if you're simply thinking of treating yourself with a beautiful and handy gift, don't forget to consider this beauty.