So in your opinion it should be no to U.S. boots on the ground in Syria/Iraq to deal with ISIS AND no to boots on the ground to deal with Boko Haram?
Yes.
At best we should be hunting and assassinating the people who are funding and equipping ISIS, and destroying their assets (including state actors...).
But it is up the locals to defend themselves. We might help them equip if they seem competent and determined (like the Kurds). Maybe throw in some airstrikes.
But no troops.