I've had an allotment for 6 years now! We've lots of different veg and fruit growing there.
I can't pretend that it is easy, and it takes up a lot of time to keep on top of it - the weeds grow very easily if you have a few days off. But it is amazing when you discover something is growing, and when you make the first harvest of a new crop.
It is also really nice to cook your own produce, especially if you have people over for dinner and are able to share with them the hard work of your produce.
I'm also influencing others to grow: my mum now has a small veg garden and she's enjoying it too.