Sup dudes and girldudes.

So I recently played a Kayle game, were I originally thought I was going mid, but ended up top. I was up against Kha'Zix, and it went horrible. Two kills later he went away roaming. I kept on farming refusing to participate in fights. I looked at the scoreboard and I was then the most farmed player with a good level advantage aswell. So, I decided to join my friends again, who had lost around five fights by now, and we stomped em. I went from 0/2 to 8/2 in just a few fights. We completely turned the tables and won the game on 30 mins.

So my question to you, is it okay to not participate in fights if you're trying to build up an advantage?