Short answer: yes. The show stays pretty consistent over time, there’s no major drop off in quality at a specific point, and it doesn’t overstay its welcome. The first few seasons are arguably better than the last few, but the later seasons have the benefit of years of character development for the writers to play with. If you enjoyed or are enjoying the first few seasons of the show then I don’t see any reason why you wouldn’t enjoy watching it all the way through. The series finale is worth watching regardless, it’s a love letter to the series and a fitting conclusion (notwithstanding the revival coming out soon).