I have been using facebook for a number of years now. It is a tool. I use it for ministry work and online sales via local swap shop groups. It sure beats the heck out of craigslist for local sales.
I do not mind the ads, I have learned to ignore most of them and actually found a few that I can relate to.
I also noticed that many folks who use their mobiles are VERY limited as to what they can or can not do on FB. So, for me, I ignore the ads that do not relate to me and am grateful this tool is here to use and I never use mobile on it, period.