It really depends on the club. Some are more competitive than others so it is worth contacting them and speaking to someone about your ability and whether you will fit in.
My club would welcome you. We are a social club with some serious runners, but the majority of the runners do it for fun, weight maintenance and to socialise. At 11 min/m you would not be the slowest. Unfortunatly I'm not in your area otherwsie I would drag you along to our next session.
There are loads of benefits from a club. Company on long runs (whatever long means to you), the discovery of different routes, motivation to achieve your goals, being able to draw on the experience and knowledge of other runners, local knowledge on events and physios, making new friends, support when things aren't going well, structured training and coaching...
Maybe not all of those things are for you but the beauty of a club is that you can pick and chose the bits that you are interested in. Speed work and hills are so much easier with a group, if you want to increase your speed and endurance but if you don't then you just don't go to those sessions.
Most clubs also have discounts with local sports shops too