I totally agree with you on the lifeboats. However,popular opinion
of the time might have influenced a lesser amount of lifeboats.
Like you said,people thought Titanic was 'unsinkable';why worry
about lifeboats? Somewhere I read an article about Thomas
Andrews wanting more lifeboats,but someone rejected the idea.
Originally,there was supposed to be enough lifeboats on board for
about 1,500 total people. Maybe you won't find the reason why
the idea was rejected,but I can guarantee you the 'safety' idea
wasn't on anyone's mind,except Andrews. It's really a shame.
Even if there were enough lifeboats for everyone on board,it
wouldn't have mattered. Titanic's crew wouldn't have had
adequate time. She had 20 lifeboats,and only 18 were actually
launched. Two drifted off as the bridge went under.