Perhaps it is indeed you.
I've flown eight sectors in the last six days and can safely say that the Manchester experience was by far the worst and most stressful of any. I would go out of my way to avoid it.
Terminal 3 at peak times is like some Guinness World Record attempt to create the world's biggest stag party. No seating, no ability to get near any form of food or retail outlet due to groups standing around with nowhere else to go but with empty pint glasses littering every surface and the floor.
The biggest problem is security. Queues at MAN and EMA are some of the worst out there and a far cry from those at LGW, GLA or NCL. The MAG airports are unique in having a policy of banning passengers from using mobile devices in the queues, so your efforts to use the 20 minute wait productively to keep up to date with emails or messages are met with a shouty person whose sole purpose is to tell you that you can't use your mobile and it's for "your safety". Utter bollocks. No other uk airports do this and it's a pure MAG thing, nothing to do with DFT or CAA requirements.
The MAG queue comber then shouts at you to get your liquids and laptops out of your bag - expecting you to adopt octopus-like capabilities to carry the items and your bag separately and yet still have a free hand to pull out a tray to put these items in when you do eventually reach the screening make-up area. You are then mildly intimidated by being yelled at (again) by someone less than a metre away telling you that if you fail to get all items for separate search out of your bag, you will be delayed by at least 20 minutes.
Lax_LHR, as the chief apologist for MAG on here, please do your passengers a favour and go see how other airports do it. Gatwick, Heathrow and Glasgow would be good examples. The current pathway through MAN T3 and EMA for customers is a disgrace by comparison. It really is that bad. An airport operating safely and in compliance with regulations does not need to treat its customers so poorly and the airports need to radically change how they manage this important area of the journey. This is very specific to MAG and not a wider criticism of other airports, many of whom do this far better within similarly constrained infrastructure. It is all about procedures and staff training, where someone has sadly got hold of this at MAN and EMA to the detriment of the travelling public.