がいると? Condtional to express "When x is around"


I've seen this a few times lately and I wanted to make sure I get it. Most
recently I saw it on a video with an animal's thoughts narrated. It said
この人間がいると安心できない。I take this as meaning "When this human is here I can't feel
relieved/I can't feel relieved if this human is around". So, ～がいると means
something to the effect of "when x exists/if x exists"? Would this be the most
common way to talk about "you" and specific people being around as well? Such
as 君がいると and さくらがいると?




Your question contains more than a couple of grammar peculiarities. The
meaning is "I feel insecure whenever this person is around.",  
BUT,  
"この人間” (this person) is someone close to the speaker at that time, so that
your phrase is mostly supposed to be uttered by someone in a group, while
someone in the group is speaking or doing something.  
It is a phrase that could be uttered by a girl who feels somewhat assaulted by
somebody.

