If you're in the position to afford hand made Amish furniture, you can probably afford movers. OSB is great for inexpensive furniture that doesn't move. The downside is once the wood gets wet or damaged it degrades quickly, unlike solid wood which will warp and split if not properly treated. One of the absolute best furniture products for strength and durability is actually plywood but people see it as a "cheap" product instead of the engineering marvel that it is. I think what it really comes down to is that when you're younger it makes sense to buy cheaper more disposable furniture. It's going to see more wear and tear and you're still finding your own style which is likely to change when you have a partner. When you become an adult and start moving less it makes sense to buy something that is going to be able to last longer with proper care. Solid woods tend to wear better over time because it's not a paper veneer over the OSB. Like most things it's about using the appropriate tool or resource for the task. I recently had to build a behind the sofa table for my wife. There simply didn't exist a product that fit our needs (12 feet long and thin) went with solid oak and while it fit we did indeed have the problem that it wouldn't fit through the stairwell and we had to walk it around the outside of the house. I doubt it would fit in an apartment.