I Peter 2:9 But yee are a chosen generation, a royall Priesthood, an holy nation, a peculiar people, that yee should shewe forth the praises of him, who hath called you out of darknes into his marueilous light:
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Salvation is about being chosen. The moment of conversion is a spectacular transition from cloying darkness into magnificent light. The converted seek only to praise Him.
Psalm 9:2 I will bee glad and reioyce in thee: I will sing prayse to thy name, O thou most High.
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Not everyone has been chosen:
Matthew 22:14 and we know we've been Saved when we see God's Perfect Love in everything we do. I find that so exciting I want to shout it to the highest mountains! How forlorn the heathen. Unconverted, wallowing in darkness, as good as dead. God explains why it is so:
Psalm 9:5 Thou hast rebuked the heathen, thou hast destroyed the wicked; thou hast put out their name for euer and euer.
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That is reflected in their choice of avatar. I know this isn't about goths but the way they elect to represent themselves is a good example. They have not been chosen.
At the other end of the spectrum there are Christian posters such as Mr Deaner whose choices depict the joy and vitality we know in Him. I'm sure neither of us intend any sort of LSD flashback or other demonic episode from our submissions.