It occurs to me that a retractable forskin might me a natural development to facilitate penetration like in the same way a tampon applicator has like a retractable outer bit. And it further occurs to me that busting your forskin open might be a natural stage in puberty for guys either through sex or wanking in the same way that busting their hymen is a natural stage in puberty for girls either throutgh sex or wanking. I know i ripped my cock to bits during puberty but in time it naturally mended itself and the result was a perfectly functioning retractable forskin .
Theoretically in nature , without lube or suchlike , penetration with a non retractable or circumcised cock might potentially be more physically traumatic , and upon that basis methinks more vulnerable to damage and transmission of disease.
Its a curious thing to ponder how come anyone has a non retractable forskin , like didnt they masterbate vigorously when they were young or what.
I think the 'normal' situation is that a foreskin is just retractable, it develops that way.
Sounds like yours was a bit tight but you skilfully managed the situation by smashing it to bits!

One of my earliest memories is of my mum retracting my foreskin as part of my washing routine at bathtime. I actually remember asking her what/why she was doing and she said the district nurse had told her this was a good routine to have. Assuming my mother wasn't sexually abusing me or doing it for her own pleasure, I wonder whether young mums are given that advice today, or whether we're too PC to talk about it?
Funny how stuff comes into the public consciousness, normally by way of women's issues, and then a bit later there's suddenly awareness of the male equivalent. Be it gender-specific cancers, performance in schools, mental health and now the state of our gentials and whether surgical intervention for religious reasons is justified (first it was FGM and now circumcision).
Getting back to foreskins though, by and large things are there for a reason, or indeed reasons. Counter that of course, with some things on our bodies being 'evolutionary leftovers' that don't really have a function in modern humans like the appendix, they just sit there doing nothing, waiting to go wrong and kill us (who knows, maybe they DO have a use). But consider any mammal at all, don't the males of the species always have a covered cock? Infact, pretty well any living creature? I can't think of any that just have their naked cocks hanging out, even fish?