I agree on that i myself like to bet manually and have fun, i don't want my bot/script to have all the fun lol.
yes, otherwise you miss all the fun. same thing with people who cheat in online games, if you do not like the challenge why play at all?
playing with bot is really a cheat and with that if they win they will get illegal money to their pocket and if lose then it will be their mistake as bots do not have minds, By the way gambling is a place for fun and with that it is nonsense to play with bot.
I dont think playing with a bot is illegal - however, I can see better ways for using a bot. House edge still means that there is a better chance of losing overall than winning - I'm sure there is some strategy that can be employed to reduce impact. For me its better to play in person. I'd rather use a bot for trading.