The thing is that I don't really like the way the factions ends after my choice of help The Institute.

I had to kill The Railroad, and obliterate the BOS. Is there a way to end peacefully? Specially with the Railroad! If I chose another road, will they force me to kill the other factions as Father did? I dislike very much the way all those quests fail...and how I had to kill some companions :(

You don't have to spoil to much...I just want to know if there is a middle way, or a less 'kill them all' option. I think that the BOS will send me to destroy the institute, even being the only real option of future for the Commonwealth (well, more like 'for the Humanity' than anything)...but I wouldn't understand why The Railroad may want to destroy the source of the Sinth!

All three of the factions are wrong in its own way. The Institute are supremacist, and don't care shit about the above ground humans. The BOS are a horde of zealots who want to get all the tech, and the leader is...well...I don't like that kind of fascist-like leaders than looks like they are using everybody to gain power. And the Railroad are just a bunch of idealists who doesn't look like they have any kind of future plans after saving some sinths (what if the institute just stop sending modern sinths above ground? They may just do nothing at all? They should be fighting Raiders and Mutants to help the civilians!).

...in the end the only faction that 'do something' for the people of the commonwealth is the Minuteman. And they doesn't get any help by the 3 factions. All 3 of them could help, but they don't give a shit.

Anyway, I don't like how I had to kill everybody, at cold blood, after being friends :(