[Alfie]

I think it depends on why you are growing boobs and why you think you'd regret it.
PM doesn't just grow boobs, it also makes them more sensitive, and they'll always be more sensitive than if you hadn't taken PM. Sensitivity is something you'll never regret, and that will keep being "a toy" for longer.
Will there be a moment when boobs become a problem after the euphoria? Again, it depends on what your current situation is in society and with your family. Older men are "allowed" to have deflated pecs and some small boobage. Unless you grow a D cup, by the time you hit 60 nobody will think anything of them. But you'll know your "naughty" secret, that you have actual boobs on your body. (I am writing all of this from a male-staying-male perspective. Apologies if I am wrong)

There is a term that some here use to describe the euphoria of growing breasts and feminize our bodies, it's "Pink Fog". It's that feeling that makes you look in the mirror every hour to see if you have magically grown another size up, makes you want to double up on PM (or anything else) and speed up growth, makes you look around for more ways to grow breasts and makes the idea of feminizing yourself even more alluring. Frequently, these periods of Pink Fog (they can last months) are followed by a WTF moment and, potentially regrets and purges. Pink Fogs are auto-induced highs, like on drugs. They happen when you are not satisfied with something around you, and changing some of your body feels like escapism because by changing your body you think you can also change your life. There is a good side of them: they come with a lot of positive energy and you can learn to channel this energy to actually make changes in your life. Some people realize that they are trans during a pink fog, others talk about their need for femininity with their SOs, others start wearing bras at work or find a job that will allow it. Then again, a pink fog is like being high on drugs, probably endorphines rather than Estrogen itself, and after a high comes a downer that you need to be able to manage without falling into depression.

I would simply suggest you evaluate the situation around you before you go too far ahead with PM (and that means to grow a huge pair... which takes time). Like you shouldn't do drugs unless you are with people you trust, you also shouldn't use PM if its effects would make you end up outside of your comfort zone.
I have a personal example I can give you. During a pink fog I decided that I should start wearing a bra daily. And I did, even at work for a few days. Then the pink fog lifted, and I realised that I wasn't feeling better for wearing a bra (I don't need them, I am a small B cup, but I love them, instead I was feeling tense for being caught out at work or by my neighbors, my son's school mates' parents... etc... Massive WTF moment. I had a few days of regret, evaluating any damage I could have already made. Then I decided that I had not messed up, and I stopped worrying, but it took me weeks to get past it. I was way too far out of my usual comfort zone. I can have boobs, but it's not (yet?) the time and place to wear a bra.
Ride the pink fogs like a pink wave, it's fun! But make sure you also listen to that small voice at the back of your mind that keeps you with your feet on the ground.

Sorry, I seem to have posted this incomplete reply. Removed the text, as I could not find a way to remove the entire post.

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