Nobody is saying not to do them and that they don't make (some) money. You're missing the information that people are telling you about scalps on your own question. I've done hundreds of these scalps. Not one.
You asked if they're worth looking for but every time someone chimes back with an answer that is basically "No" you prefer to argue that the answer is "Yes". There is no right answer. But myself I agree with Sundown and I'm adding my own 2 cents. There aren't that many especially within the state of Nevada only and you aren't the only one who would bet them if found so you may even miss one or two that you hoped for.
I'll also warn you that although you don't see why playing the off number is blindly a winning strategy at the moment, I encourage you to do some more research in that area to help you answer your own question because the answer will very likely be in the long run that you will win money playing that off number. You may still determine that you prefer to scalp the number but Sundown has a very good answer here.
And there aren't loads of them even with all of the offshore outs and without them the answer is more no.
It is all relative. You're way ahead because you do a few of those a year? Unfortunately, I will be critical here too. It is pretty obviously a world where 50 bucks just doesn't mean that much anymore. Agreed you can't earn much interest risk free in your bank. The scalps are better but it is still not alot of money.
Of course scalps aren't really risk free which is another reason you can earn more money but I won't get into that.