If you are fat person and does not fit into the normal chairs that are available outside in the furniture store or even at the online store, you should plan for some custom furniture that would be too costly to think about. While you could plan for a complete furniture set over a period of time, you would need a quick solution for your problem right now so that you could relax a bit from the bothering problem of your hefty body. How about buying the small ottoman so that you could sit on it comfortable leaning onto the wall so as to watch the television in front of you.
You could probably shift the television into your bedroom but definitely your sibling who is also sharing the room with you would suffer with the sound that comes out of the television when you watch some action series of episodes or movies. You may also get to the habit of eating more food when on bed as the mood when you are on bed would be different than when you are on the ottoman. If you claim you are not fat then the other uses of ottoman would be to avoid blocking the space in the house by using this. Instead of buying too big sofa that is not used quite often by you, using this would suffice.
Also, you could buy it as a foot rest when you are working on some task by using a pen and paper but not on a laptop. You could of course think of the combination of the combination of the bean bag or lounge along with the ottoman that helps rest your legs when you completely do not fit on the bean bags or the lounge. So, hope you would now buy it for multipurpose usage.