There is a similar "flip hinged" 15" model available (I believe it's called the Inspiron 15 7000 Series 2-in-1, but I'm unsure of the specific model/SKU).
Most PCs are forgoing optical/CD/DVD drives in contemporary years as the demand for these drives has reduced greatly. While many desktop PCs (who have also seen a demand decline) still include them, removing them from laptops was a key element in getting these devices to be thinner/lighter, longer lasting on a single charge, etc. If you think about it, when is the last time you burned a CD or DVD and transferred files that way. With today's cloud storage and send services and with the low cost of thumb drives, home made DVDs/CDs quickly obsoleted.
As far as commercial discs, music has for a long time been more about streaming and online purchases from iTunes/Google Play/Spotify/Pandora/etc... Movies have largely gone the same way with Google Play/iTunes Movies/Netflix/Hulu.
I'm not saying that we don't all have discs we need to play/copy/install here and there, but for the most part, they aren't a primary medium anymore so the trade off for space and battery capacity drove them out of mobile devices.
You might be saying: "I don't care where the lemmings are going! I want my MTV, DVD and CD! I'm still angry about losing the tape deck in my new car!" For you my friend, I recommend one of the offered external USB DVD/Blu-Ray drives available at BestBuy which would allow you access to your optical collection without having to keep a drive attached for the 90% of the times you don't need one.