I completely agree! We had organised to take family and kiddies on a picnic to the Lake District a couple of weeks ago, weather forecast looked promising, bought all the food and drink and dug out the rug and plastic stuff - and then it chucked it down on the day! So, we had it on the rug on the living room floor at my mum's - just wasn't the same, although was slightly amusing and far fewer wasps and sheep dottles. I just know that those cheese french baguette butties would have tasted SO much better outdoors. I think it might be something to do with adrenalin - it heightens the senses - you have more adrenalin running through you when you're away from your 'normal' surroundings, ie. on hols or visiting friends or experiencing something new