I bring my speaker in and have a concert. Sometimes I'll get really really into it and use bottles as a microphone. If I'm home alone I'll sing as loud as I can, maybe even dance. So that's why I take so long.
The hot water makes me feel less lonely. This is an actual reason btw. The warmth may be tricking people's brains into thinking they are with someone that makes them feel less lonely. As one study said, "The lonelier we get, the more we substitute the missing social warmth with physical warmth."
Standing is tiring and sitting in the shower is another level of depression that I rather not reach