Each snake has it's own personality. I agree that some species tend towards certain traits more than others do (ie. it's in the ball python's nature to be shy and curl into a ball when scared).
I think each keeper looks for different things in a snake. Some like to own display animals that look great, but aren't handleable, and some want a "lap snake".
Personally, I like a variety. I have 2 garters that are great to watch in their tank, as they are very curious and active. My others are more shy in their tanks, and tend to be easier to handle. The milksnake is very busy the whole time I hold her, while the king is much slower and more deliberate, but not quite as willing to sit quietly in the lap as some ball pythons I know.
I think now I'm babbling, but hopefully I'm answering your question... I love all my animals, each has it's own individual personality.
Nicki
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Nicki and...
1.0.0 Liasis mackloti savuensis (Savu python) - Baz
0.0.2 Uromastyx geyri (Saharan Uromastyx) - Dragon and Little One
1.1.0 Uromastyx dispar maliensis (Mali Uromastyx) - Spike and Lizzy
1.0.0 Lampropeltis mexicana thayeri (Variable (Thayer’s) Kingsnake) - Kavi
0.0.1 Lampropeltis triangulum campbelli (Pueblan Milksnake) - Callia
0.2.0 Thamnophis sirtalis parietalis (Red-Sided Garter Snakes) - Spot and Fluffy
Ontario, Canada