The volumes for trading have generally become a lot lower than the December and even January highs, yes, but it also depends on whether you're measuring in fiat or ETH values. You can always check out the volume charts at coinmarketcap and other sites. Some pairs aren't very good volume, others are better on other exchanges like Xenrise says. I generally try to look at the markets tab and choose the top five (unless I don't already have an account there). But to be fair, if you're not a whale like I'm not, in doesn't really matter. My orders generally get filled.
I agree. The trading market is very limited and inactive right now because so many coins are going down or are already down in value at the moment. Many people have the idea that when the assets are down, holding and not being active, in terms of trade would be a better move than risking it and only seeing a loss. Its just a matter of timing, people usually wait for the right time to trade, specifically when the coins they are holding are in the midst of going up in value or during the time when the market is revitalized.