What gave you the idea that it is bad to make a guild?
It is not bad, making a guild and helping it improve and seeing it progress as time passes is one of the the most rewarding thing you can possibly do/experience from this game. Do not let anybody else tell you a different side of the story. Making a guild of your own is like making an investment and providing a good home for guildless players out there. It takes courage, time and dedication to make your guild stand out among the rest so goodluck!
Merm is right. My guild, Shinigami Society, was built from the ground up and now we're a bit more recognized. We aren't in the class of Upperclass, WMD, or the guilds that have been around a long while, but we're getting there, and to be able to watch it grow and change is part of why I'm still playing UR
with all the other guilds around like the ones Ryuk mentioned its gunna take a lot of time and dedication towards the guild you want to make if you are the type of person that can be a leader and will stick to your goal(which in this case is to make your guild happen) then i say go for it but its gonna be a long and tough way since theres a lot of guilds already so good luck