As I apparently live in the country with the highest rate of illegal TV show downloads, I should point out that part of the reason for that is the massive delays (or sometimes even downright impossibilities) in finding a decent way to view these things legally...
When a US or UK show takes 6+ months to make it here in any shape or form, many of us just give up and find it somewhere...
It's sad, but true. People are not known for patience. Even those of us who don't like the idea of ripping off the creators of such things.
Only the purest of the pure will never attempt to download something if you make it hard enough to find/access the legit thing...
If it takes you months of searching to find a legitimate source, but an illegal one can get you something in 5-10 minutes searching, well, the results speak for themselves. (To be fair, this is more common with old computer software, but software devs have largely started to catch on to this. The other main issue, the cost of certain specialised tools, such as 3d animation stuff, has also seen intermittent efforts - For a while, pretty much anyone doing 3d animation in a non-professional setting was likely using a pirated copy of some high-end package such as 3d studio max, (or maybe lightwave 3d). For a while there was gmax, which helped the modding community, but was discontinued), now you can get Maya on a monthly subscription that is far less painful than the older pricing model...)
Still, computer software isn't really the topic at hand.
If you live in certain countries, finding a 'legitimate' streaming site that isn't IP blocked can be incredibly difficult.
You have to hope it might show up on TV (Yes, old-fashioned, right?), but you'll often end up having to wait forever, and in some cases (such as Anime), that may not happen at all...
That limits your choices to illegal streams, or waiting forever and then probably still facing having really expensive DVD's as your only real option.
It just makes it quite difficult to do the right thing...