Don t forget that Titanic had 2 sister ships the Olympic, and the Britannic. In fact Britannic was a lot more luxurious and a bit larger than Titanic was, it never got to see a paying passenger.

Olympic & Titanic in Belfast

HMHS Britannic at Mudros on 3rd October 1916
All three ships where part of the "Olympic" class ships from White Star Line. Though Olympic was the only one that never sank, she had a whole timeline of bad luck.