Sandbox games not your slice of pie?

From time to time I meet up with people that share one common opinion, they don´t like sandbox games.
Why does one hate this genre of games? I often ask myself that question, and now I´m going to dwelve right into the subject.

Lets start our small thesis with a well known game [Fallout 3] This game came out from bethesda softworks on 2008 and was highly anticipated by fallout fans and bethesda´s own fanbase. The game world is huge and has so much content it might actually be impossible for one person to find every single item/detail in it without relying on wiki sites or strategy guides. Some people like me for example love this kind of "never ending" games where you can actually use up to an 30min-2hours just checking out a single city district. So what makes it so hard for some people to approach these games? There are numerous reasons i´ve herd which i will now list.

1. Game has no clear ending 
2. The game world is huge and thus its intimidating and players don´t know where to start
3. The time these games make you consume is shocking
4. The fear of getting to immersed
5. OCD (obsessive-compulsive disorder) game gives to much stress for people with this disorder

Sometimes the reasons are alot more simple (hate the games theme, graphics, slow pace, lack of CGI cut-scenes  etc.)

Now which steps could one take to start appreciating this genre of games and lose his prejudice? Here are few points I usually hand out to people I get to debate about weather the games are good or bad.

1. If you intend to play a sandbox game you should have at least 2 hours of free time for each session
2. Take your time, treat each new area as a "level" the objective is to inspect it thoroughly 
3. Listen to each dialog and immerse yourself with your character it makes the game allot more enjoyable
4. Do not cheat the game, don´t visit wikis instead just concentrate and try your best to solve the problems yourself its way more gratifying than running to your computer and checking the wiki over and over again. Use them only when absolutely necessary

Of course its highly possible that you as a person just aren´t looking for these elements in your games, in that case there is nothing else i can tell you. But if you haven´t played any of them before i highly recommend you to give these following games a try (Fallout 3, Fallout:NV, Elderscroll III:Morrowind, Elderscroll IV:Oblivion, Dead island, GTA IV, GTA San Andreas)