More Lifeboats?

Many people say that if the Titanic had enough lifeboats to save everyone, no one would have died. That is in fact, not the case. The Titanic sank in nearly 2 1/2 hours, and that isn't enough time to launch all the lifeboats in my opinion. Yes, they could have saved more lives. The evidence I have to support my theory, is that by the time the water reached the boat deck, the last two lifeboats were being taken off of the roof officer's quarters had there been 40 or 50 to sustain all lives, I estimate that only around 22-25 lifeboats would've either been launched or floated off. So, that's only a little difference between the 20 taken off the ship (2 floated off). All that to say, the Titanic sank very quickly once it got just above the boat deck, which was time to launch a few boats but not very many as to the slanting/listing towards the bow.