I understand that no release date yet is bad but could people follow the development before complaining?
Squadron 42, the game's single player campaign, is FEATURE COMPLETE. This means that once all the features are ported to star citizen, the only thing it will be missing is server stuff (like a living market and server meshing) and in game locations like new star systems (the first of which is scheduled to release this year) and star citizen is feature complete as well. The developers have even announced that they are already planning a 1.0 release and will reveal more info soon, which the article did mention.
I hate the fact that you can buy ships as well with real money but to think this game will never release is coming close to hoping the game will fail.
This read a little bit like "once I'm done building this boat, I'll just be missing the space stuff to fly to Mars"
I hope it's not taken negatively, I'm just extremely uncertain that they could reuse anything from the offline to online part. This doesn't necessarily mean that you're wrong with the release schedule and so on.
They actually already have! In the most recent patch they updated the flight system to use the one from the single player game and overhauled the ui to be like the single player one (the old system was very outdated and slow)