Succulents need their roots to dry out quickly. They don’t like to sit in water for more than a day or two and will begin to rot if they stay wet for much longer. This is why I highly recommend using pots with a drainage hole when you are first starting out with succulents.
Also question is, are drainage holes necessary for indoor plants?
Whether your potted plants are indoors or outdoors, proper drainage is an essential element to ensure they stay healthy. This process keeps water from pooling at the base of the pot, which can cause bacteria, fungus and root rot.
Similarly one may ask, are pots without drainage holes bad?
If water does not have a way to drain freely, it gets trapped inside the pot and eventually deprives the roots of oxygen, creating roots rot, which is fatal to plants.