I love Lidl and Aldi - we've used them as a family ever since they arrived in the mid-1990s. Tins of beans used to be 3p and were comparable to the real deal. Mum used to buy them by the box-load and then head off to M&S for the rest of the shopping. I used them as a student (the lager came from Pegnitz in Bavaria and was excellent); I used them to do half of my food shopping when starting out in work - nothing wrong with most of unprocessed food; I use them when staying abroad as I know their product range and there are a (very) few meals I can prepare entirely from lidl/aldi stock; and as a parent they are brilliant for nappies, wipes, and kids' snacks. And I have always loved the jumble sale bit in the middle where you can buy an easter egg next to a motorcycle helmet next to a food processor.
What I have never, ever been able to do is a complete shop in one. I genuinely don't think it is possible.