No ads, not prone to crashing, calls don’t randomly kick people out and force them to be unable to join, pencil hell doesn’t happen to large chats, and best of all, doesn’t eat up all the memory.
Generally, Discord’s faster and more efficient than Skype, and how it handles pictures and YouTube posting is in chat so you don’t have to open another program to see it. Discord is by far a straight upgrade and I haven’t opened Skype in months.