Table tops will warp if you just screw the boards together and to the base. You can avoid this by gluing the panels then attaching to base with proper fasteners to allow for expansion/contraction.
You can build them properly but this requires using true edge s4s lumber or removing the dimensional round edge with a table saw, band saw or jointer. Your glue up then requires a good number of large clamps. Even out of poplar, adler or basswood which are cheaper hardwoods you'll have $250-$300 in the table. Oak would be $500+.
>there's so much chip-board and laminating that I think there must be more plastic/glue than wood fiber. Just like electronics are being designed with obsolescence as a requirement, maybe more so is the furniture in your house
The problem is people want things cheap and nice looking. You can get a solid white oak table from Crate and Barrel for $1500; which isn't really that bad considering that's around $750 in ready to go s4s lumber from a mail order supplier. It's a lot cheaper to do as Ikea did and have a particle core with a 1/8" oak 'veneer'. Ikea's table is $600.