I absolutely love studio portraits! You get complete control over everything that happens (unless the kids are acting up of course). The light does exactlty what you tell it too and if you don't like it a couple of presses of a button fixes it. You know exactly what the background will look like and it doesn't matter what the weather's like outside.
For the photographer it throws up a whole load of new challenges that you don't get in the studio. First is the light. You're relying on the sun. You can't move it or change its brightness so you have to adapt every shot to the lighting conditions. Yes it can be 'modified' with reflectors or diffusers (or trees!) but you are limited. That's good though because you can achieve some fantastic effects that you just can't get in a studio.
So if you fancy something a bit different this summer why not give lifetyle portraits a go?