I love how you can have a multitude of companions in this game that all give you perks and things.
I've also heard that bringing certain companions with you can trigger small scenes here and there.
However, I love to take my time, be very carefully around each corner, and companions just ruin all my sneaking attempts, so I don't use them :(...
I have the lone wanderer perk, so IMO it makes up for the carry weight that a companion can bring, and let's suppose that I have maxed all my character perks so I don't need things like lock picking and hacking, in that case, what are all the disadvantages (which cannot be made up for) does never brining any companions with me give my character?