It is horrible hearing them cry. Really horrible. But then it's soooooo nice when after a couple of nights you get your bed and evenings back.
There is research saying it causes attachment issues but there is also plenty of research saying it's fine, so there is no unanimous scientific acceptance of either outcome.
We have done it with both ours but slightly gentler methods (eg disappearing chair technique for one so we were right next to them for 6 nights just a bit further away each night, and controlled crying with picking up etc with the other).
Please just bear in mind when people say that you child is learning if they cry that you won't respond - children aren't stupid. Unless they're tiny babies they known bed is for sleeping. What they are learning is that you won't respond if they just want to chat and play and stay up and not sleep. I think when they are really tiny they genuinely need lots of cuddles in the night but when they are older they just want it. It can become a habit and a want rather than a need. They also need a good night's sleep! And while some babies do this themselves some do need to learn.
Sorry this is a bit rambley. I'm trying to say there is a massive difference between leaving a newborn to scream all night or leaving a child to get so distressed to the point of vomiting etc and leaving a much older baby to cry for a few minutes. And sleeping is only part of the interaction with parents - if they are warm and reassuring the rest of the time and responsive and affectionate in the day I don't see how not responding at night will affect the relationship (as after a few days they will likely be asleep all night anyway - its not like they are lying awake silently for hours wanting to cry but thinking it's pointleas! )
Mine will still cry and get a cuddle if they can't sleep or have a nightmare or bang their head on the bed or something - they will cry til we respond if they are genuinely upset or ill and sometimes come in bed with us. So I personally haven't seen evidence that they've learnt that 'there is no point in crying'
I agree with getting your partner to do a lot of the training if you have been the main caregiver as this has worked well for me and people I know (I would have been more likely to crack and the baby would want feeding with me)
I guess it depends on what and partner want and how much you prioritise own space and evenings. And how tired you are and what type of job and commute you have
Good luck anyway