Bethesda has always forced emotions when it "needed" to be done. It's not like this is anything new in Fallout. James, Martin, Serana, Amata, Sarah Lyons, Uriel, etc. I'm not sure why this is surprising to you.
Eh, idk... Sometimes, a bit, which is why I liked FNV's story much better than FO3. The daddy issues were certainly annoying. Still, Amata at least you could have been a complete ass to. Sarah you could force to die in your place. In the case of TES I'd argue they forced 'necessary actions' rather than emotions per se... You didn't have to care for Uriel or Martin, but you needed to help them to keep Tamriel intact. (And even then, you didn't actually have to do it or -more importantly - ever indicate you wanted to, right? You could just be on your merry sidequesting way). At least from what I remember, haven't played Oblivion for a while. Can't talk about Serana since that whole aspect of a forced follower turned me off of Dawnguard - never played it.
Also, it's surprising to me because I thought they'd continue on the FNV path rather than go back to FO3. I thought they knew many players valued the more blank slate protagonist that game offered, as opposed to more pre-rendered pc's like FO3, or those of Bioware's. I thought being the alternative to that trend was a strength Bethesda would embrace. Guess I was wrong.
I guess I could deal with a 'protagonist to villain' story for FO4, in that you start as a nice family man, but the Wasteland turns you into a bastard and you just cease to care... Still would need to have that option reflected in dialog. We'll see.
@Cyonan - that's exactly why I like the FO3 story less. I always felt the main quest was awkwardly ooc for my character, and the best he could do was end up severely bipolar - help the Brotherhood, then get Sarah killed, then killsat them... The latter both nice evil options, and I'm grateful for them, but I prefer my evil somewhat more... planned and pragmatic. Then there's the voiced protagonist issue which, along with some other factors, hints at Bethesda trying for a more plot-driven storyline. So the combination of a set pc background I don't like, and a plot that (due to limited dialog options due to full voice acting) has to continue that storyline - that does not bode well for me and my rpg preferences.