Totally missing the point. If they have the content already created, presumably it takes little effort for them to recycle the event. During this time saved, they aren't just going to sit on their hands and do nothing. They will be working on other stuff. Meanwhile, those of us who weren't playing or weren't around for the event have something new to do. So you aren't really losing anything in terms of the team working on new content - the upshot is that a lot of people have something new to do. Just not you specifically.
I accept that some people want to be the 'special snowflake'. I don't mean that in a nasty or derogatory way - that is your opinion. That is adds value to your experience. I don't understand it and don't agree with it. Personally being the owner of unique pets and speeders that are available in the game, I actually feel they should all be still available - either through the event itself or through a Bioware sponsored vendor. They need to have credit sinks in the game to keep the economy functional - adding these event items for millions to the digital deluxe vendor would help, and allow them to lower others syncs like repair bills. You win again, even if you oppose the event! I see no reason to oppose this other than the snow flake opinion, which I just can't get behind.
The thing is, you benefit indirectly even though you feel like you are being harmed. Having the player base have more stuff to do keeps them around. It makes them happy. When other players are playing and happy, they are available for you to do group content with. They make the game feel more alive. Player retention is important for everyone who has any grouping aspirations whatsoever.
I really hope Bioware sees the light on this and learns their lesson and makes all further events recurring, so this feeling of 'it was only supposed to be one time!' is not an issue for the future. To be frank, a few people feeling burnt over an event becoming recurring is not much of a concern to a much larger group of players that either don't mind or want to have the content still available.