Let's just get into it. Here are reasons why I love glue sticks:
They are lightweight. You can just bring these things even in your pocket, unlike wet glues that come in bulkier containers.
They don't cause a lot of mess. When applied to surfaces, they only leave a thin layer of paste, and even if applied excessively to the same surface, it won't make as much mess compared to wet glue. Wet glue tends to create mushy residue when applied excessively. You have more tendency to have multiple air packets bumping on the glued object (if you're using papers) when using wet glue.
The results are neat. Wet glue tend to create more wrinkles on the paper when being stick to the surface, thus creating a tree-bark-like appearance (which doesn't look good most of the time, unless it is intentional) than compared with the results of glue sticks. Projects that are pasted using glue sticks tend to be neater and smoother than the ones that are pasted using wet glue.
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Kapoy mgelmer's glue