The lake district is truly a unique place in the world. Sure there's places such as the Rockies, and it's true that mountains over there do indeed dwarf those of the Lake District. But when it comes to views, size doesn't necessarily matter. In the lake district, you can walk for half an hour and have a completely different view whereas in Canada it takes hours just to get round the side of a single mountain.
The sheer handiness is a massive bonus too. They are easily accesible from anywhere in England, and from the North they are just a simple drive of no more than an hour or two.
In the Lakes there's something for everyone. If you're not into walking, or have a disability, there's plenty of things to do at places like Ambleside, what with all the Tea Shops, Museums and little boutiques, not to mention boat trips on Windermere.
If you can get there this summer, go!