I actually haven't watched a second of it since the finale. After it ended, I felt like I had given it everything I could and haven't been up to viewing it again.
Still, don't let the dislike of the finale, or the direction the show went, dissuade you. Believe me, at its heights, Lost was a fukking fantastic program. Even in the latter seasons when it lost (no pun intended) some of its glimmer, there were still aspects of the show that hit those heights rarely seen on television. Like I said above, I personally thought that season 4 was damn well done and it definitely had one of the best episodes, of course some may disagree. If you can watch True Blood (Technically terrible, but SO damn campy and fun) or even Game of Thrones (Lovely show, but it does have pacing issues, and some storylines can be a drag), than you're not taken a step down with Lost.
My biggest concern is that you won't be able to recreate the entire FAN CULTURE that surrounded this show, which was a huge aspect of it's draw, especially towards the end when the show had lost like over half it's viewers and all the die hards who stuck around still had so many ideas. This is major, and unfortunately, unless you find some sort of online community, or a group of family/friends to watch the show with you, you won't be able to recreate this experience. On the other hand, the same thing can be said for just about any television show (It's just that THEORIZING was such a major part of Lost).
Believe me breh, Lost recaps were on a whole nother level. It wasn't just recaps, it was straight up DETECTIVE work trying to put together clues and themes to anticipate what was going to happen. Niccas didn't just seek out spoilers, we were HUNTING them. The online culture surrounding LOST was unlike anything I've ever seen, and probably won't see again for a very long time. It was brilliant. This is the aspect of the show I miss the most.