They are fine for a family. Even though it is just the 2 of us, I know heaps of owners with kids.
Fridge access. Yes when closed and travelling it can be a pain to get to fridge. Solution, we have a car fridge also, and keep our lunch and snacks in that. When we did our cape trip, we never needed to access the fridge during the day with a bit of morning planning.
Cooking. I only cook inside when it is crap weather, I mean who wants to stand in 4" of water trying to cook some tea while the wind keeps blowing out the gas? Apart from that, it's a fire and gas BBQ for me.
Agree with the others on the insect thing, we have a flyscreen in the door that does help a bit.
A fully knitted out version will weigh nothing like a kk, and and you can also set up in some pretty iffy terrain, as long as 2 wheels are on the ground that's all you need.
We set up in spots opening over bollards or small scrubs.
Ps I am a bit biased though.
Good luck, not every camper is perfect for everyone, that's why we have such a large choice.