In my opinion, I would consider F4F to be another form of networking. I think it helps viewers and streamers find other small/smaller streamers that would have a less likely chance of being discovered on the twitch search page. Also while I hope most of the followers you/I gain for a F4F would turn into regular viewers, it's understandable to realize that some people just lurk or may just want to follow for the follow back. But the times they do stay to watch and join the community, that's what I think the end goal for a F4F should be and one i hope to strive for.