Home Theater Bypass , why am I hearing this now.

OP - you can have great HT and 2 channel listening in the same room sharing some of the same gear.  I started out really into HT and 2 channel was an afterthought. 
I have tweaked, swapped equipment more than my better half would like!  I’ve settled on an integrated amp for 2 channel with HT bypass, Lumin D2 Streamer / DAC for 2 channel.  The majority of speakers out there will work for both 2 channel and HT.  Focus on their 2 channel performance, the need to match / voice the entire HT system is never something I found to be true in my HT set ups, meaning if you swap your fronts and they aren’t the same brand / model but you love them for 2 channel, the impact on tour HT set up should be minimal.  I’ve experimented quite a bit.  The notion that the Home Theater experience is baloney, garbage is absurd.  A nice AVR HT receiver with room correction and proper speaker set up will blow you away while you watch movies and no 2 channel will take the place of that experience, period.  Same way you can’t get the same 2 channel performance out of the AVR receiver and made for HT front speakers.  Many, many people have a set up that does both, don’t listen to the noise that your set up has to be dedicated to one or the other.  A great set up that does both extremely well is very attainable.  

The important point is it’s more than doable and there are a lot of options depending on budget.  

I’ve had an a separate amp / pre with HT bypass in the chain with my HT receiver.  I’ve swapped Front speakers, streamers / Streamers around.  I’ve had a class D amplification in my HT receiver and paired it with a much more powerful class A/B amp that costs multiple times the receiver which was not a cheap receiver.  
Today I have an integrated Tube Amp - Primaluna Evo400 (2 Channel w/Hat Bypass) paired with an Anthem MRX-1140.  It pairs well for movies, no issues at all with integration of the Tube amp into my HT set up.  2 channel is the flip of a switch and I’m in 2 channel tube heaven.  
In every set up I have tried and combo the 3 constants I have had are no issues with the integration of the pieces - HT receivers auto calibration tools can work wonders on that front, that the separate amplification / pre for 2 channel always has sounded quite a bit better than the HT Receiver for 2 channel and adding a separate amp to the mix improved the surround sound of the receiver, opened up more power for the other channels.  Key that the HT receiver is totally out of the 2 channel chain, I’ve tried it as a Pre to separate amps and doesn’t deliver the same 2 channel performance, even with direct analogue pass through - unsure why.  
I 100 % agree with Big Greg on how awesome a Movie experience can be with a HT set up.  I watched John Wick 3 last night in Dolby Atmos and it was an experience.  You can’t get that without the HT set up, period.  I felt shot gun blast, felt like I was in the rain storm and that I needed to wipe off the broken glass that had sprayed in my direction.  And then I flipped a switch and enjoyed a little 2 channel listening before calling it an evening. 
What you can argue is that if I took all the money I have into the 2 channel gear over the years or vice versa, the HT gear, if I applied all those funds to one or the other I would have an even better set up for whichever I picked, as long as I selected the right gear.  I love HT and 2 Channel listening and I have 1 space for both and I still am quite happy with the results for both.