The internet is great, but it cannot replace meaningful personal interactions with people who share a similar interest. It is important to surround yourself around a community of people who are 'in it together.'
A meetup's value is directly correlated with how invested everyone participating is, and from that what you make of it and invest in it. If you're devoting time to a subject, the more viewpoints the better, and a local angle is a special support network of similarly invested people.
Some of my best friends, advisors, and more have occurred from interpersonal relationships via meetups.
Approaching meetups with a 'me' attitude is short sighted. Communities exist for a reason. Help others and help others help you. You'll find that when you get the opportunity to receive that support, you'll be glad you did.