I have worked 70% (3 days in the office and half a day from home) for the last year. I am employed in a big company (in Germany), so there are rules in place which allow me to do that (and return to full time). I think you need to think about your priorities and what is important to you before you decide.

Upsides: - Much more free time to do what you want. For me it is sports, health, pursuing my own projects and trying to get my business of the ground. Nothing seems to make me more happy than to go jogging on Thursdays after lunch while everyone else is in the office for 1.5 more days.

Downsides: - Being at a quite traditional company where people have similar values (finance house over 30 years, get a company car, have a nice bicycle, go a little on exotic vacation from time to time, vent about the free cafeteria food), they will not understand you and why you even want part time. I looked there at the statistics and some 90+% of who do part time are women. - I couldn't support a family alone. I am not even sure though that I could do that well if I have a full-time job though, especially not save up for retirement (this is another long discussion, I recommend reading Unscripted or Fastlane Millionaire by MJDemarco to get a more entrepreneuial view on that). - I am not sure how good it is for my career if I switched permanently to part time, especially switching job inside (and even more outside) the company seems much harder in that case.

Next month I will switch back to full time (as my part time period was limited to a year) and see how I like that again, but if I don't like it, I can fortunately switch back to part time.

In Germany there is a law that you can switch to part time, but soon there might even be a new law that you can switch back to full time again [1]

[1]https://www.deutschlandfunk.de/gesetzentwurf-beschlossen-von...