You built one very basic bootstrap site and despite not having done HTML/CSS in 3/4 years you've now got the expertise to tell everyone else they are doing resp

You built one very basic bootstrap site and despite not having done HTML/CSS in 3/4 years you've now got the expertise to tell everyone else they are doing responsive design wrong? I've built responsive sites in Bootstrap, Foundation and "without a net" and I wouldn't presume to tell anyone what's hard or not about responsive design or even if I'm doing it right or wrong. Look if out-of-the-box Bootstrap is good enough for your needs (and more importantly your user's) awesome. That's called an anecdote.