Back when I joined it back in 2017, I used to use Discord a lot. I had preferred Discord over Telegram for quite a long until now. Here's the reason why I (and probably you too should) quit using Discord.
Every single thing you do in the app, is logged in an event containing your user ID, a unique event ID, a timestamp, and a very detailed description of what exactly you did.
Deleted messages and attachments are not actually deleted, they are deleted from the user's/client's side but they are accessible by cdn.discordapp.com links (attachments) and they are accessible by the Discord staff too (both deleted messages and attachments).
Read a detailed explanation of the data being collected here.
You cannot use the tab key to move around different sections, because it's been overridden to always focus the text field. Although there are various keyboard shortcuts, they are hard to remember and cannot replace the classic tab key experience.
Various parts of the app are light-themed, despite the "dark" mode which is not-so-dark:
- The add server dialogue is always light themed.
- The server region selector is always light themed.
- The download apps screen is always light themed.
The new design for the mobile app is horrible and (almost) everyone hates it. Read more about it here.
The discord staff doesn't care about you, especially if you are a big contributor to the app, for example, if you make Discord bots which benefits their platform but barely benefits you at all. You should read this blog which explains about the mess caused by the Discord bot verification system (or verified bot developer system).
It basically requires you to send to Discord, who you are in real life by sending them a scanned copy of your passport otherwise, your bot won't be able to be added to more than 100 servers.
Also, Discord can decide it's time for you to leave their platform, at any point in time. Ever jokingly said, "I'm a 5-year-old"? That is enough for you to get your account locked and deleted after 14 days. For example, here's a person who said they are under 13 and got their account terminated and here's a member of the discord.js library who got his account terminated too.
The staff members of Discord have the power to do whatever they want, read this post which explains how a Discord employee abuses his power by banning and then unbanning a person's account as a joke because he publically posted a screenshot of a graphically edited Discord client (because mods, themes, and plugins are against the app's ToS).
Apart from graphical tools, the Discord staff also has the power to edit the database and do whatever they want:
Source of this image: here
Deleting your account will not delete any information from your account. Deleting your account will only remove your profile picture and renames your account to "Deleted User".
All of your messages and data will still remain on their servers. So your only option is to manually delete all your messages (which is pretty much useless as your messages aren't actually deleted) or use a script which deletes all your messages and hope that the bot detection system does not get triggered or you will be locked out of your account.
Telegram, Slack, Skype, and Matrix for text chat and Jitsi, Mumble, and Peercalls for video, voice, and screen sharing.
There are many many more problems with Discord that aren't listed in this post, but you get it, if you really want a truly private experience, use one of the listed alternatives.
I'm happy that I quit using Discord and chose freedom and privacy.
This post intends to make you aware of the problems with Discord, this post, in no way, forces you to stop using Discord, you are free to do whatever you want to.
Note: This post or its contents may become irrelevant in the future. This post was last updated on November 4, 2020.