For one, the character coverage is much broader than what's typically found on an international keyboard.
I use it all the time for typing arrows and other symbols, for example. YMMV but I also find it mnemonically better, from time to time I can just guess what the right Compose sequence is.
I use it all the time for typing arrows and other symbols, for example. YMMV but I also find it mnemonically better, from time to time I can just guess what the right Compose sequence is.