Also, my 2 cents, but it is high time for a return to utilitarianism in furniture. Just getting a basic leather sofa without cup holders and other e-garbage is a huge pain. (Ironically, Ikea is ok for this.)
What is this special space time dilation wood you found? If its made of hardwood it will be a lot heavier. If it weights similarly and its solid wood is usually very soft and will live as long or less than IKEA furniture.
Interesting note... I recently disassembled an IKEA cupboard from 1999 made from MDF. It was definitely much heavier than their MDF products (eg. Metod kitchen cabinets) from today.
While perhaps IKEA sells some heavy wood furniture, most of it is fairly light.