I never envisioned myself eating a steaming hot bowl of porridge in a PLA bowl but I do see myself using one for popcorn and small things like that... if you want dishes, buy them... 3D printing is wicked overkill and won't last. I wouldn't be surprised, due to the low melting point of most of these filaments, that they melted themselves over time even just with dishwasher and water cleaning fluids.

Jon