I've registered hundreds of domains over the years, and still have a few hundred. Most were brought with a specific idea for a site in mind, but I ended up focusing on the few sites that made serious money, and the rest ended up just sitting there.<p>Parking websites was a thing around the turn of the century but hasn't made any real money for many years now, there just isn't the type-in traffic. Same for quick template sites to throw ads on, getting traffic to the domain isn't worth the effort for the tiny returns.<p>I've sold domains in the past, mainly on Sedo and more recently Flippa. Some have sold for five figures, many for four figures, so overall I've made a profit. But it's hard to get offers over 3 figures nowadays (unless it's a super-premium name).<p>Only my .coms have ever received offers, there's no real resale market in the new extensions (or even .net, .org), again with the exception of really, really good names.<p>Those new extensions are cutting the resale demand for even .coms, and making the offers smaller. It's got to the point where I'm letting names expire rather than mess around with the selling process for a hundred or two dollars (more buyers fail to pay now as well, wasting even more time).<p>In short: unless the name is a really exceptional .com, there's no longer much of a business in buying domain names to hold and resell. Only buy the names you need.