Thanks for the comments.
The only thing I am worried about is regarding overheating issues... I see people write quite often ("I got a laptop and it started overheating the year after"). Is there any other standard cause for this other than accumulated dust/old heat paste which can be fixed? Like components degrading or something.
Sometimes overheating issues are caused by new (gpu) drivers - you can always roll back though. Also the fan bearings if you can call them that wear off after some time depending on how much and intensive you use the laptop. My old clevo W860CU which is still able to run witcher 2 and bf3 fine started making rattling fan noises after about 3 years of heavy use. At this time I also saw a noticeable increase in operating temperatures. I took the fan out, disassembled it and added some grease as a band aid while waiting for a replacement part to arrive from the mail. It turned out the newly greased fan worked just fine and in the end I didn't even bother to swap it for the new spare part.
If the gpu and cpu are assembled with the stock thermal pads that some components come with, instead of proper paste, it'll start overheating after some time of use - just make sure your assembler of choice uses a good quality paste.
A little bit of canned air through the vents every now and then and a more thorough dust-off with the back cover off every other month and you should be fine.
All these issues exist in the desktop realm as well.
This is not meant to sound like an advertisement but since a lot of people are saying laptops suck at everything I thought I'd provide an alternate viewpoint.
edit. take into account that as Budwise already stated no matter what it says on the product page your battery life is going to be terrible and you'll always have to have access to mains. It will last 300 minutes only with the screen off while idling in the bios setup.