In general, Ikea sucks. Big time.

The steel utensils, that TP mentioned, are above average. Some other things (pillows, chairs, etc.) are value for money. I have a bed plus mattresses from Ikea. Decent, but it won't last a lifetime (I'm already thinking about replacing it after 5 years.).

Wooden furniture from IKEA is 95% shyte.
A few items are from more or less solid wood and can be used for a longer period of time (I have a cupboard and a thing with drawers like that. It's still in good shape after 10 years.)
The 95% is from presswood or whatever name it has. It's what h2c and B described: garbage wood, held together by loads of (toxic?) glue. The self-assembly means, that after a few years, you pull open a drawer and are standing with the front part in your hands, while the drawer is still neatly positioned on its sliders. It's a one time thing: you can assemble, but if you want to move and take it apart, you're done. You'll never manage to put it back together again in such a way that it has any structural strength. In the last 15 years I've tossed a lot of cupboards, dressoirs, etc. out of windows of moving friends: straight onto the pyre.

When you live on a marginal budget, don't need to move your furniture and couldn't care less about appearances, IKEA ain't that bad. Otherwise: stay away.