In response to Alchemy:
I COMPLETELY agree, I'm a "play every note, don't trigger ANYTHING" kind of guy, in the extreme. The only exception I have is if I'm doing a "one man band" thing, then I'll give all the most basic things to loops, like pads and instruments I wouldn't play anyway(drums, rhythm guitars). but I've I'm not using 2 hands for the most central parts 2-3, then kill me now. But I don't even do that very much, as I mostly play in bands, and then I'm always playing every part. I also play Trumpet, and I often will play piano and horn at the same time too, so I have no sympathy for triggering unless there is no other way. I use my laptop as a SYNTHESIZER, not as a triggering device... I can, but I won't.
Happyrat: agree with everything there, except I would argue that most modern digital synths have little resale value too. Maybe a bit more, but like computers, they're constantly being upgraded and outdated. They're valuable as controllers (I wouldn't mind getting an old K2500 as a controller), but soft synths use controllers too. My Arturia Keylab should have just as much resale value (for it's price) as any hardware synth. Your other points don't mean much to me, because I'm a Mac guy (have to use one for my other jobs as video editor), and I had already bought softsynths gradually for studio use, so price hasn't been a big issue. As for the last point, I would have to agree. But TBH, booting Kontakt and loading a piano takes me about 5secs, so that's not that much worse. I live right beside a University music center with grand pianos, so if I really get the itch to jam, I just go over there anyway... and that wouldn't matter if I had a hard synth or soft synth... acoustic piano will always be better.
No question there are a few drawbacks, it takes a little more time to setup/breakdown. But as I said, because of complex patch switching, I can do with one 88 board what I would normally use 4, so that's a savings right there in time and money. It also has a much steeper learning curve, setting up my MainStage layout to my liking took many many hours, it was definitely a bit of a time investment.
I keep going back to the fact that it all depends upon how you like to organize yourself, and what you work best with. I would never fault anyone for going full hardware. But for me, and the way I work, going the laptop route was literarily like a breath of fresh air. The moment I switched, I NEVER hooked up my hardware synth (Alesis QS8) again.