Why a Tablet is Better Than a Laptop

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The title should probably read: Why a Tablet is Better than a Laptop...sometimes. 
When smartphones came out, I couldn't fathom being on the internet on such a small screen. The iPhone certainly won me over. When tablets emerged, I couldn't see why I would want one. If I want a big screen, I have a laptop, if I want a small screen I have my phone, why would I need an in between? 
Currently, I have a Nexus 7 and Husband has an iPad. I've found that a tablet has a very specific niche in my life. 

Four instances when a tablet is better than a laptop or smartphone

1. When you want to really recline. If I'm not feeling well, or tired, or really want to stretch out on the couch or bed, the tablet is much more convenient than balancing a laptop and angling the screen perfectly to be able to see. 
2. When you're browsing under covers. Literally under the covers. At night if I or my husband is ready to hit the hay, but the other is not, we slip the tablet/ipad under the covers and the other is none the wise. You can do this with a smartphone too but...
3. When you're doing graphic heavy activities or precision gaming. The screen size of the tablet makes Pinterest, Instagram, etc. much more enjoyable than on the small smartphone screen, and much more portable and comfortable than a laptop. Also, games that require precision pressing or swiping, are easier to play on a larger screen. 
4. When you're on the go for an extended period of time. When you know you're going to be sitting somewhere for an extended period of time, too much time to look at a small screen, but not long enough to whip out a laptop, a tablet comes in handy. Tablet are good for occurrences like waiting in a hospital, where you're likely to moving from place to place often, but waiting for a while as well. 
Which do you prefer? Smartphone, tablet, or laptop?