I've done b/w in my own darkroom for 32 years. I've done a variety but mainly studio portraits (as a fanatic amateur). In recent years I've had a blast scanning old negs and playing with them. For a few years I played with color before I realized that it was a complete waste of time (I even got to the point of mixing my own chemicals from scratch) and that it was really cheaper to get prints from a lab. Well, with my scanner I was able to actually make prints from old color negs that were very good. Hooray!!
About 3.5 years ago I got a Nikon Coolpix 900 and then a 950.
About 9 months ago I bought my D1x and a full set of "D" lenses (I'd had manual Canon equipment for the past 30+ years.
Since that day I haven't shot a single piece of film or been in my darkroom (which had always been a place of metaphysical refuge for me)
Frankly what's really amazed me is the complete change in my photography. Before I was a pretty confirmed studio portrait photographer. Now I do all sorts of things I've never even thought of before. I've done some abstracts (weird, I've never liked them till now), architecture (some of which I've turned into abstracts), nature and flowers, and lot's of people (but mainly outdoor portraits and just fun stuff).
Now, to really answer your question...
It's almost impossible to say what effect a D-100 will have on you. It totally changed my outlook and I'm having more fun than ever. It's put a LOT of FUN back into photography.
Just getting a scanner did a lot, but didn't expand my vision the way the D1x has. It's like looking at a whole new experience of photography.
Now, you may not respond to the joy of digital that way. You might indeed be happier with a better scanner. I have no way of knowing. But in may case it was a complete change and I love it.
It's been VERY costly. Far more than the best scanner would have cost. But that would only have changed the way I dealt with the same old stuff. This has changed everything for me.
Will I give up film completely? I wish I knew. I've still got 2 Canon AE-1 Programs, 2 Mamiya 645s, and a 4x5. I've also got 8 rolls of 120 film I shot just before I got the new camera and haven't even developed (they're some really bad portraits I did that I just don't really care to look at). But I'm not ready to sell the cameras and darkroom just yet. But I'm not guaranteeing that they will just gather dust till the time comes to part with that part of my past.
I hope this helps.
i posted this on the nikon talk forum with no response...hope i can
get some advice here...i am not a pro but i do take a lot of
pictures...i use a nikon f100 now and scan neg with a canon
fs2710...i am considering purchasing a nikon d100 but for less of
the price of the d100 i can up upgrade my scanner to a nikon 4000
or the canon 4000... scanner...would the photos look better off the
scanner or from the d100...i usually do not go above 11x14 on my
prints....any advice would be greatly appreciated....thanks, gary