Are lofts good investments?

What do you guys think?

Do you mean like converting a loft into usable space, or "lofts" as in, buying a trendy loft apartment in manhattan lofts?

Yes, all lofts are unequivocally good investments. Buy as many as you can afford.

Maybe he just means a loft bed. Go for it, man.

Lofting a bed in college is an awesome way to gain space. Go for it.

No, I meant a loft conversion. As in, a place to live in that was once a warehouse, storehouse etc.

Like @RollingZeppelin implied, it depends on many factors that you haven't offered. The neighborhood and cost and amount of fixing up required are all pretty important.

Your question is far too general to give a meaningful answer.