There's a world of difference between Ikea particleboard crap and heirloom furniture - you can make quite useful and durable furniture from pine board; Ikea actually does (though they could stand to spend some time on the design, the IVAR system is BY FAR the worst storage related problem I've ever dealt with; tossed that into the fire and got Uline wire shelves instead).

Moving the lifecycle of a piece of furniture from 3-5 years closer to 20 is highly worth it; even if I no longer need it I prefer to leave it on the curb for someone else than have to shove it into the trash can. And these metal shelves will last longer than I will - and can move to the garage if I no longer need them.