I had never used a bidet until I visited Japan a few years ago and I was instantly hooked after one use. Washing away excrement using pressurized water as opposed to smearing it around using toilet paper is more efficient, more hygienic, more pleasant, and results in a cleaner outcome. Bidets effectively let you perform a less-invasive enema which you cannot replicate with toilet paper. The one downside to using them is that the nice ones do require electrical power to produce heated water, so you need to employ an extension cord or get an outlet installed next to your toilet to use them.
I personally have a Biobidet 6800U which goes on sale for 50% off at Costco pretty regularly.