It says something with HIMYM that the season 9 teaser was the kids, all grown up, yelling at future Ted to wrap things up because it's gone on too long.
I will say for all of the hate BBT got, they didn’t try to do something bullshit for their ending like most sitcoms had been trying to do (e.g How I Met Your Mother). They created a simple good/wholesome ending.
The whole last season was trash and then they had the audacity to say "and then he got together with Robin anyway". Why have him meet their mother when all he wanted was Robin? Just have them end up together and be done with it.