We are made in God's image and He is a person, not just some invisible, omnipresent force. Here is some more research for those who love to ask questions yet won't do the digging.
The Bible consistently portrays God as a passionate individual, whose inner experiences of love, compassion, grief, delight, joy, peace, anguish, and moral outrage at atrocity dwarf ours in the extreme. The Bible makes no apology for this, but rather exults in the Living One, in contrast to the dead and lifeless idols that surrounded its writers.
One scholar put it thus:
"The Bible speaks unashamedly of Yahweh's passion, presenting him as an intense and passionate Being, fervently interested in the world of humans. Not only is there no embarrassment on the part of the OT at Yahweh's possession of emotion, but rather, it is celebrated (see for example, 2 Sam 22:8, 9, 16; Ps 145:8). In fact, his passion guarantees not only that he is intensely interested in the world but that he is a person. This in turn opens up the possibility for communion at the heart of the universe. Therefore, his passion was seen to be continually linked with the implementation of his resolve, and in this, interaction with the world. The God of the OT desired fellowship and interaction with the other persons in his world, and his anger was seen to be part of the actualization of that desire.
[This, I might add, is so fundamental to understanding the bible (and knowing God, obviously!)--although rarified versions of systematic and/or philosophical theology have been (and, are still) known to hold to varied forms of an 'impassible god'.
For all the emotions I can think of, the bible takes the position that such emotions can be appropriate responses to situations OR inappropriate responses to situations (when the emotion is deliberately sustained, of course). Pity can be quite inappropriate (e.g., when it is the dominant emotion controlling how one deals with active, willful, violent oppressors, instead of for those being victimized by them), and outrage can be quite appropriate in situations of moral and human atrocity (e.g., child abuse, rape, violent crimes against the elderly, vandalism against the poor, extortion of the helpless).
Likewise, the Bible argues that (like us people) emotions are not 'mutually exclusive and exhaustive' at any given moment. Just as my mom could have felt affection, anger, compassion, frustration, confusion, helplessness, hopefulness and despair(!)--ALL AT THE SAME MOMENT--when I was still a teenager living in her home (embarrassed grin), so too can we and so too can God. God is frequently described in these terms in the Prophets--His love for His people Israel (compassion and affection) is simultaneously experienced by Him as His anger (at their intra-Israel atrocities) and His hopefulness (that they will 'wake up' to treating one another better, in keeping with the Covenant contract they "signed" together as a community!). Hosea 11:8ff is so very vivid (and moving) in showing the struggles in the heart of God. There is no intrinsic contradiction in ascribing multiple emotional states to a person, since we consistently experience these in our lives. And God, as a Person, is apparently no different in that respect...
For example, God is said to be "angry with the wicked every day." Since "wickedness," in biblical terms, is generally related to treachery, atrocity, and oppression, I would HOPE God would be disturbed by this. But at the same time, the Bible says that God is "patient" with them (hoping they will 'come around' and re-join the community in love and contribution) and even "nurturing" (i.e., leading them/influencing them in that direction). His moral anger at personal evil, of course, has nothing to do with Him being 'caught off guard' or surprised by it (!), since His response is the treachery involved--NOT the circumstances of it. Even my experience illustrates this aspect. I know quite well that in the future I will read (yet another) story of human atrocity, be it on an individual scale (such as rape, child abuse, or brutalization) or group scale (such as ethnic violence, religious persecution, or economic exploitation), so there is no element of 'surprise' in my response when I actually encounter the story. I KNOW I will be upset when I read it...