No reason you should use it. But your characterization of the general content is unfair.
There are millions of positive, thoughtful people using it for things other than "being awful". I follow a bunch of people in the ADHD and autism communities and get a ton out of hearing what their lives are like and how they're dealing with things. I also follow a bunch of academics so I get to hear a lot about niche topics from people who are world-class experts.
Twitter will show you whatever it thinks you want. If you follow a lot of awful people and engage with a lot of awful stuff, it will make sure you get plenty of it. But if you switch to the "latest tweets" view and are careful about who you follow, you can get a lot out of it.
Also, as somebody who used to have severe self esteem issues, I really encourage you to find a therapist you like and respect to work on that. They, plus the underlying issues, can make almost anything unenjoyable. As long as we have biases toward seeing ourselves negatively, anything that invites us to be ourselves will feel negative.
Edit: Fresh from the top of my timeline, here's an example of the sort of positive niche content from the ADHD/autism communities, a discussion of experiences with medications for ADHD: https://twitter.com/HolSmale/status/1477308561256558595
There are millions of positive, thoughtful people using it for things other than "being awful". I follow a bunch of people in the ADHD and autism communities and get a ton out of hearing what their lives are like and how they're dealing with things. I also follow a bunch of academics so I get to hear a lot about niche topics from people who are world-class experts.
Twitter will show you whatever it thinks you want. If you follow a lot of awful people and engage with a lot of awful stuff, it will make sure you get plenty of it. But if you switch to the "latest tweets" view and are careful about who you follow, you can get a lot out of it.
Also, as somebody who used to have severe self esteem issues, I really encourage you to find a therapist you like and respect to work on that. They, plus the underlying issues, can make almost anything unenjoyable. As long as we have biases toward seeing ourselves negatively, anything that invites us to be ourselves will feel negative.
Edit: Fresh from the top of my timeline, here's an example of the sort of positive niche content from the ADHD/autism communities, a discussion of experiences with medications for ADHD: https://twitter.com/HolSmale/status/1477308561256558595