So, as many are well aware, Bitcoin saw a huge rise in 2017, peaking over $20,000 in some regions;
Of course, it would be tremendous to see those kinds of gains again in 2018, but with regulatory pressure coming down hard, bitcoin has in more difficult waters than ever before.
With segwit acceptance increasing, and the advent of the lightning network likely by year end, how does bitcointalk think
BTC will perform this year, and why?

No way to exactly know but it is my opinion that if the lightning network gets activated in this year we could easily reach 30k or 35k since that will solve one of the main issues with bitcoin right now, if that does not happen then it is likely we remain in a range of 15k to 25k that is low I know but this seems to be about right since many people will be nervous due to the increasing regulation and fees.