If I sell all my alts, what do I do with my losses? Remember it's not a loss until you take it, and I can bet alycoin season is just around the corner. I can feel it. I'd rather hodl to zero than sell, if that will ever happen.
For how long you are planning to hold on to your alts? In case some of your alts have lost 90% of their value, are you still going to hold those coins? I am asking this because I have 7 years of experience in cryptocurrency and when some coin losses 90% of its value in a short period the chances are very slim for a recovery. In most cases, the trade volume drops to a bare minimum and gradually the coin will get delisted from the exchanges. If you sell those coins now, then you can save yourselves from complete loss.
Well... it is always a tough decision to book losses. But you need to do that when the requirement arises. Sometimes booking loss can be the most intelligent thing to do while making an investment.
Although I agree that in some cases taking the loss is the right move, I'm not sure it's a situation where we say some of the alts have lost 90% of their value. However we can say pretty much ALL alts have lost 90% of their value. So in that situation, it's not an issue of a specific coin crashing 90% in a short amount of time and then hoping for a rebound. It's an issue of nearly the entire market and if you feel it will recover at all. Odds are some coins will recover, perhaps not to their ATH, but at least better than their current situation. Of course determining if your coin is one of the recoverable ones is the tricky part.
If we are talking about dinky bounty coins or coins in danger of being delisted, yeah, if they just crashed like 90% on top of whatever losses the market has caused to nearly every coin, it might be time to bail. Then again, if it's nearly worthless sometimes it doesn't even matter if you sell or not, especially for bounty coins.
For those in profit, either from trading or other investments, remember losses can be useful during tax time too.
And I'm not recommending folks sell their alts into btc, like the OP suggested -- in fact I argued against that point. Or to be exact, against listening to random folks here who act like experts and stating they know where markets will go. But if anyone decides to sell, remember the tax thing, it's at least somewhat useful. And losses can carry over to future years, so its one way to recoup at least a little bit if you eventually make a profit down the road.