How many of you guys actually use support groups?

Been thinking about joining a dad support group or something similar but feels kinda weird? Like would I actually open up to strangers about struggling? Or is it just a bunch of guys trying to out-stoic each other? There's one that meets Wednesday nights near me but the details on their website are sparse. If anyone does this - what's it actually like? Do you feel better after or does it just make you feel more alone?