So much must depend on how you cycle - which is far broader than distance/speed. Personally I enjoy the freedom, I go at the speed I want (which varies through each ride) I go where I want, normally setting out without any plan but decide at each junction where to head next, if I've more energy I'll end-up going further, etc. Hence I ride alone; suits me but I can appreciate others might enjoy different styles and other aspects.
For me riding alone does not mean no sociability. I'll often be stopping to say hello to dogs (sometimes even acknowledging their owners), chatting to people out on a walk, to horse riders (one such stop with a frightened horse owner had me walk to horse to give it a treat (she provided). Even through stopping and chatting several times with one person ended up encouraging them to take-up cycling and few weeks later they'd got a bike and were out cycling. Riding alone does not mean no social engagement.
Subject to "rules" (eg what you wear, etc.) if considering it then give it a try. Not like you are committing for life for all your outings by cycle. If you enjoy it, get on with the people, etc. then great but if you don't then you can stop at any time.
Ian