No, there you're wrong. It does no such thing because you are free to return to and revisit the previous continuity whenever you wish. And writers of books and fan productions are free to create new stories set in that continuity.
A reboot does not literally destroy the previous continuity. It merely offers an alternative version. The original is still there.
What you're really talking about is preference for one version over another. And I most certainly understand that. I followed
Star Trek from TOS to TAS to TMP and through the subsequent films and then (sporadically) through TNG and into DS9. And then I bailed because I wasn't enjoying it anymore. Something had changed too much for my liking. My ultimate dislike for JJtrek isn't because it's a reboot but because of how it was done and the final result. It's really an extension of why I grew disenchanted with contemporary Trek even before we had heard anything of JJtrek.
Even before JJtrek I had compartmentalized Trek to my own liking. For me
Star Trek was/is TOS, TAS, TMP and some of TNG. I simply
ignore the rest. The rest--if I even think of it--is all some alternate continuity exactly as I see JJtrek. They can do whatever they want because to me it doesn't register. And whatever future Trek project comes along I will judge it the same way: if it's enjoyable and fits into my view of Trek then fine, and if not then it doesn't matter and I'll ignore it. It's that simple.
It doesn't mean discussion can't ensue regarding what I might like or not like about it.
I like the Daniel Craig continuity of James Bond yet that doesn't invalidate or destroy my enjoyment of the Sean Connery continuity of Bond or the continuity as it's established in the original novels. I liked
Man Of Steel yet that doesn't destroy or invalidate the continuity I enjoyed in the '90's TAS
Superman or the 1950's
Adventures Of Superman.
So if they manage a really cool reboot of TOS/TNG and it grabs me it still doesn't invalidate or destroy the original Prime continuity. It's still there to be discovered and enjoyed.
And today we are living in a wonderful time for enjoying these things because so much of the past is readily available to us unlike ever before. Prior to this time one had to wait for films or series to be rerun on television for us to see them again. Now we don't have to wait for that, or go by memory alone, because we can purchase copies of the films we like as well as season sets of the shows we like. We can revisit them anytime we wish.
For me
Star Trek is TOS, but that version of TOS isn't coming back. It's done. The closest we can get is to read original novels or watch fan productions set in that era. I will never again have Shatner as Kirk, Nimoy as Spock and the rest unless I revisit the original series or read a book and imagine the characters that way.
The only other way to perpetuate what I love in
Star Trek is to put that into a new form that respects the original in terms of execution yet expands in ways that weren't possible before. My favourite TNG episodes don't even have any of the original characters yet they somehow (perhaps by accident) managed to have something of a TOS vibe or sensibility to them. A book or a fan production can do the same thing. There were times during the first season of
Earth Final Conflict where I felt there was something of a TOS vibe to those stories.
Just because I don't like VOY, ENT and JJtrek doesn't mean I'm against anything new. It simply means I don't agree with how those were done. It doesn't mean I'm against any new
Star Trek at all.
I must also state that unlike some other fans I have no attachment to the contemporary Trek era (just as some have no attachment to the TOS era). While I enjoy certain episodes of TNG anything post TMP simply doesn't really register for me.
So while one can dislike the form a reboot might take it doesn't threaten what you like already in any way.
As far as characters go it's not that different. As I stated above I can accept Daniel Craig's Bond as easily as Sean Connery's. I can accept Henry Cavill's Superman as easily as George Reeves. I can accept Christian Bale's Batman as easily as Michael Keaton's or Kevin Conroy's. If I only had to go by the characters I saw in JJtrek I could get discouraged, but then I see Vic Mignogna's portrayal of Kirk and I see that someone else can bring TOS Kirk back to life even if it isn't exact. So from that sample alone I can see that a rebooted
Star Trek with right right actors and the right writing could most certainly work.