I believe here in Canada it is law, if you see a stranded boater you have to tow them in.
Only if it doesn't endager your crew, you or your vessel.
As far as used vs. new. It's all about budget. To get the boat I wanted, not needed, I bought used after looking long and hard for more than a few years, 40 to be exact believe it or not, actually most of those years was window shopping. I bought it from one of the folks that worked at the Marine, perfect, I know it was well maintained and the guy was anal about it. Waxed it 4 times a year. I saved $45,000.00 on a 14 year old StarCraft Superfisherman 190 from the price of the same boat new. More when counting all the add ons.
Having some life experiences now that I'm past 60 the best advice I can give you when it comes to a "want" vs. "need" is this. If budget at your point in life is not a concern, buy anything you want. If you are starting a family and budget is an issue now, wait to buy a boat. Wait until the baby is 5 years old, by then you might have another. If then you can still drop good money on a toy then go for it. I believe by then a boat will be the last thing you will be thinking about. I had to wait until I retired before I finally bought the boat I wanted. A 14 foot tinny with a 9.9 was what I could afford when I was younger and that's what I had. Actually I didn't even own it myself, a pal with 2 young children and I split the $700.00 for it.
If you do decide to pull the trigger, educate yourself (iboats is a great place to start) on knowing what to look for in used. Let someone else take the hit on the depreciation the second you wet that $36,000,00 boat that takes 15 years to pay for. Some people buy a boat and then realize they need another grand usually more to buy things like an anchor, PFD's, fenders, oars, safety equipment, sonar, compass, VHF radio, even rope isn't free, the list goes on. Heck a pal bought a used28 footer a few years ago that was his first boat and his jaw dropped when the gas pump stopped at $450.00 bucks. We laughed and said welcome to boating little Buddy.
If I was having a newborn soon I personally would wait, not 40 years like me but not now. It's up to your baby's Mom and you and only you both.
Congrats on the new baby and let's just hope all goes well with the new baby. A boat maybe the next new baby.