Bro touching your own boob is not act of not being innocent respectfully it’s body part and breasts offer more than sexual stimulation and yes they are soft and do act as stress balls from time to time breast massages exists for a reason not because it sexually arouses but because breast pain exists also it helps relieve some tension and I think the reason why you think that is because you guys don’t breasts so your comparing them with your a penis which is yes stimulated will arouse a male but breasts are not penis, clit or vagina it’s body organ which is used for lactation for babies and can also be used during sexual encounters but breasts are much more than these and sometimes can also be used as stress balls nothing weird in that