Earlier quoted context omitted.
There is no good reason investment income should be privileged over income from labor.
At risk of bottoming out on the threaded replies, I'd be interested in talking through how that would work... Let's say you wanted to give income from labor the same benefits as (negative) income from investments that lost money... How would you do that? Say I earn a healthy $250K/year at my W-2 job. If I buy a large house with the proceeds from my job, have I incurred a loss? How about if I eat out at an expensive r…
I am not all that sure about carrying forward investment losses, and as you are aware some expenses are deductible while some are not. While eating a fancy restaurant is strictly optional, spending on medical of educational costs are quite different.
In general I think if someone investigates the edge cases first (eg looking at the second-order effect like carrying deductions on negative income) that's a sign of not wanting to look at the larger picture.