instead of ditching your friends why dont you help them get ready for coil faster, or invite other likeminded people into your FC? If your friends aren't serious enough to do coil then isn't it better for you to find someone or group that has the same goals? Good FCs or groups almost always come from people doing the same hard content long enough and are compatible with each other. Back in 1.0 when completing relic required tons of work and effort, people started to form static groups during the hamlet phase and alot of them stayed together till today.

I left my long time LS since 1.0 because their goals weren't in line with mine so I end up with another FC and I'm happy with it because we have like.. 7 groups of coil static across all timezones (JST, PST, EST, GMT), we would get things done on tuesday and have the rest of the week chill or help others/alts.

It's also a form of socializing since you aren't constraint by your own group, you seek out others that can do stuff with you and have fun.