[BluffTHIS!]

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This is about as bad as it can get (coin flip). I got this hand heads-up all-in preflop and unfortunately, lost with my aces.

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I've always hated that whole "coin-flip" term and mentality which migrated from tournament play to cash games. A positive edge is a positive edge, and you want to get as much money in on same as possible, provided that, you aren't long term getting larger sums in on smaller edges while getting smaller sums in on larger edges, and where such large stacks you have built up are now a significant percentage of your bankroll. This is because even though the edge is there, your variance can shoot through the roof and damage your bankroll badly when the conditions above aren't met, and because allowing the LAGs to stack you this way preflop when your edge is small often will result in their hitting and running when they win this situation, when you could have been assured of grinding them down in multiple pots.