Its definitely worth it but like someone stated and will state everytime: you can also wait for free flight events which are literally free for ANYONE. And during that time they give everyone a few ships to try out completely for free... even expensive ships. Last free flight i was in (im a backer tho) they gave us 890j which is the most expensive ship ingame right now thats flight-ready.
But bear in mind free flights usually stress the servers alot more than normally so there will be more crashes as people screw around with their free accounts.
If you dont mind throwing 45 pucks then you will get alot more stable experience when you try the game outside any events that attract more players.
I mean we are on WoW-forums and everyone knows WoW has had server issues too with big events... or people just raiding cities with 100's of characters on a single server and crashing the server as a result. Star Citizen isnt safe from that either. :P
Best way to experience SC is to join a corp and play in a group. Have fun with people who own bigger ships in a dedicated group doing more dangerous missions. (some missions are impossible in starter ships simply because the opposition is better equipped and with bigger ships. And flying bigger ships alone is also very bad idea since the pilot cant shoot any weapons so you NEED friends to use the weapon-systems which can be manned turrets or a weapons-station in the bridge)