Thank you all for your mature responses, something I appreciate about space sim communities. As someone that doesn't have the game I didn't want to make a bad investment, like a recent investment I made in an early access game that was a bit underwhelming.
Surprisingly, there were way too many GREAT replies to just reply to most of you personally as I desired to, It would've been a mega quote thread

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But I wanted to respond to all of you who had the inclination to hear back.
For some folks, the answer seems it's mainly about a suspension of disbelief of an immersion of being in space and having it as a entertaining escape from the labors of daily life, something that can't be palpably communicated, just tangibly experienced subjectively. That's something I always enjoyed as a gamer.
Other folks did a great job of explaining a lot of anticipated features, and I didn't see an overabundance of koolaid addiction, just a lot of good ole anticipation on design docs, and currently unwritten code, the nature of the beast. We have to take it with a grain of salt, so to speak, game development is a bit of a volatile process. It's like promising to deliver a hazardous explosive commodity to a station, sometimes the deliverer scrapes against the station wall on landing and the unexpected and unfortunate happens. Space explorers are big dreamers and visionaries, so I would expect no less. It was interesting that many of you reflected on what personally is drawing you to the game and illuminated things for me from a variety of perspectives, every post was worth reading, so thanks to all of you.
The size of the playfield, the variety of things to do and places to go will be the biggest long term draw. You will always be able to go where no one has gone before.
The best way to get a feel for what the game will be like is to read the DDA documents here
http://forums.frontier.co.uk/showthread.php?t=25164. Every planned feature is there.
The DDA thread was truly a great read last night, as well as the E-Book summarizing it real well, it should be required reading these days for anyone 'really curious' (RTFM I say).
The DDA shows the depth that is necessary to make the game interesting and versatile. It also shows the devs capabilities to make a great game, and holding a high vision without overburdening us with too much mundane micromanagement. Everything from varying fuel quality, skimming fuel from gas giants, sensor variations, misjumps where you can end up in unexplored space, the galaxy map, discovering new things, NPC behaviours, module malfunctions, hiring wingmen and controlling them, multiple ships able to be owned and managed (happy for that). That and a whole lot more was cool to see and hopefully can be pulled off. There is intellectual depth mixed with some adrenaline pumping action, a fine balance I personally desire.
I also got to thinking how this game may have opportunity to be fleshed out for years to come, and it takes years to make something truly great, something beyond all of our current scope. Unfortunately good development takes a lot of time and money. Trying to please everyone isn't going to work either. I don't have a problem in investing money on a worthy game that provides months, or even years, of enjoyment. Hopefully Frontier doesn't go the route of micro-transactions of game assets/game currency to sustain the game. Also hopefully earning in game credits doesn't take too many hundreds of hours to feel like you are still a pauper.
Most notably it seems to me, this genre requires an ability to suspend disbelief, a desire to really role play, so to speak. After all, this is the awesome hugeness of unexplored space dammnit!

You have to love space and enjoy the 'life', not just seek that adrenaline fix in fragging people in CoD or be compelled to level up that character with the best weapons to be L337, or compete for sake of a 'need' to win. Space sims are truly their own niche and I do love them for all they bring to the table for their audience, its much of what made PC gaming so exciting in the early days, it broke out the walls. I'm just getting older and I hope I can appreciate them the way I used to. So far I really like what I see, and hopefully the mechanics will allow people to play a hundred hours and not feel like they have been there and done that, although at the end of the day that is truly subjective.