People who say its easy have never fitted oneI am pretty competent but would not put it in the easy bracket. Maybe if you have a track/table saw, good router, jiggs etc....
People who say its easy have never fitted one
Seriously though, its not hard to do the basic fitting out, units etc is all very simple. Some people will find fitting wooden tops harder if they need cutting and fitting together, stone is much easier they come and template it all for you. The bits most people will find harder are the electrics, plumbing, cutting plinths in and cornices etc.
I'd actually find the plumbing and electrics the easiest bit, never fitted kitchen units myself.People who say its easy have never fitted one
Seriously though, its not hard to do the basic fitting out, units etc is all very simple. Some people will find fitting wooden tops harder if they need cutting and fitting together, stone is much easier they come and template it all for you. The bits most people will find harder are the electrics, plumbing, cutting plinths in and cornices etc.

that's just pure pedantry lolbut people seem to get very argumentative between a 16mm panel vs an 18mm panel and then thickness of back panels etc.

Doesn't really fit here perfectly, but it kind of ties in the kitchen suppliers and quality.
We've looking here in Spain (so sadly no option for DIY Kitchens!) Currently the best quote/design has come from Kutchenhaus. However i've been reading a few things about the poor quality of their cabinets with only 2 chipboard cross beans across the top rather than a full cabinet and quite thin back panels.
The price is decent without being cheap, and the door panels etc are exactly what we want and feel better than the properly cheap options but that obviously comes at a price. Feels like they've focused budget on the front facing parts and cheaped out on the background. Am curious how important cabinet rigidity actually is with a kitchen. In theory it's going to be installed and then never moved so presumably doesn't need a huge amount of structural strength once the worktop is installed and everything is screwed together.
Am i over simplifying things here and it actually is important or is it oversold?