I was taught how to read and write in cursive at school, and it was mandated that all non-math assignments were written in cursive from 3rd through 6th grades.
I hate writing in cursive and have always found it slower and more cumbersome that block letters, and as a result, I haven't done it since other than for a select few things such as my signature.
Writing in cursive should be faster than block letters, the gesture is like a flow going forward, unless crossing t or dots on i/j once the word has been written.
My daughter is left handed and has no problem with writing fast (at least for her age), fountain pen with (very) fast drying ink+quality paper. Otherwise, there are good pens now that are enjoyable to write nowadays.