Yes I feel you.
So much of the intended gameplay is still absent that it can seem like that sometimes and I also too find myself using 1 ship most of the time. I have other ships but I always seem to use 1 or 2 ships to scout about the verse usually.
I remember someone at CIG mentioning that our ship is intended to be like another player character. My interpretation of that is over time our ship/s will become more personal beyond the initial base hull, with things like paints, component upgrades, repairs made, dirt n'wear, badges and other such modifications (that have yet to be seen) would perhaps make using one ship in particular the "intended" overall gameplay mechanic?....Like Han Solo's Millennium Falcon maybe, I dunno.
Perhaps some modifications will be locked behind certain reputation grinds? Hypothetically something like a salvage upgrade or even mission types that are only available once you reach a certain rep in salvaging, which would make owning a top-tier ship like the Reclaimer with no salvaging rep fine, but not optimal. Like a chef owning a $10k Snap-On tool chest when they really need a $10K set of Japanese chefs knifes. you may not be getting the best out of the tools you have.
Personally I've always thought having a big fleet containing a multitude of different ships types like Racing, Salvage and Bounty hunting may in-fact not be ideal (for an individual) given we'll eventually have reputation etc. to think about and that may mean we find ourselves following a gameplay/grinding path that means we are not able to make full use of every ship type in our fleet as we do now, that is once more RPG style gameplay elements come into play.
All hypothetical of course and I guess $buying a certain ship now that may be hard to acquire/find/unlock once the game is live regardless of how much UEC we have is a head start...maybe haha.
said and I agree we need more info on what certain gameplay loops will even look like before anything becomes more than just speculation at this point, for me anyways.
Personally I go with what I feel is cool and I know I'll like regardless of any FOMO and what will be "the best" when buying a ship with real money and taking a break from logging in or even thinking about SC is normal for me. I try to treat any purchase I make like placing a bet in a casino at this point.. Have fun and spend what you can afford to potentially lose.
Listen your gut, free your mind and your ass will
P.S. If you have an Aurora then you're winning already....get one in yellow and black and you've beat the game already!