Robin has been part of Batman since NINETEEN FORTY so it's a bit absurd to cling to this idea of Batman as a loner. He's almost NEVER been a loner - since Day 1, Alfred was part of it, then Robin, then legions of others, including plenty of civilians like Gordon, Lucius Fox etc. These are not just supporting characters but people who know his identity and actively help him.
Now Spider-man, that's a fucking loner. Feared and hated, no friends, no-one knows his inner pain, not even his one living blood relative (yeah, there have been exceptions like MJ over the years but that's the status quo it usually returns to).