All my local furniture shops, including Ikea, have horrible, horrible experience. And it's the same for other shops. It's practically impossible to know all of the following:

* is everything in the picture included * what are all the possible exterior dimensions of the product * what are the specifications of the products down to all the specifications which make you choose one product over another

The saddest part is, lately it's been impossible to find this data on the manufacturers website as well. Basic things like how many nits does the TV have, how big does the front panel need to be for the dishwasher etc.

I found for a lot of websites that Google image search works a lot better and quicker to find what you are looking for then the site's own search page.

Not for IKEA, they cancel products all the time. Discovering an IKEA product you really want and then discovering that it's not available anymore is a really shitty feeling.

Slightly shitty feeling? Anyway, the popularity of IKEA makes it that you can search second hand websites by the name of the furniture and have a decent chance of finding it. Would be surprised though if IKEA has a higher turnover of furniture models than other shops because selling furniture depends on creating & following trends & fashions and that’s the same for any brand (although some brands have their ‘classics’ that they keep selling for a long long time, like IKEA does).

IKEA furniture falls apart if it is disassembled for transport.

Very little furniture is designed to be disassembled for transport though. But you’re right in the sense that the flatpack format is pretty practical for transport and you only get that when you buy new. Second hand is always a bit more complicated for the human, even if better for the planet.