My older brother told me to reconsider marrying my current girlfriend.

We get along well, so I often talk to my brother when I have a problem.
Also asking for advice00
I have a younger girlfriend who I’ve been dating for about 2 years now.
I’m thinking about getting married, so I’ll be honest with my brother.
But my brother told me to reconsider marrying your girlfriend.
I tried to stop you, but whatever the reason,
When you are married, you talk to each other and resolve conflicts.
It is very important that we work together to resolve the issue.
I feel it again
After marriage, money issues, childcare issues, minor lifestyle habits, etc.
It’s impossible not to encounter bumps.
When I said I liked you, you didn’t make any noise, but your girlfriend dived.
If a problem arises while riding, avoid it and do so, which is very irresponsible.
And he seemed careless.

And even if it’s not as easy now as it used to be, after marriage you
700% if you don’t develop the habit of avoiding problems when they arise.
It is possible to guarantee
If you marry someone who can’t communicate properly, your life will be
He said think seriously that it might be possible.
Those around you are married seniors at work, friends, or acquaintances around you.
If you have people, ask them and tell them to make good decisions, but they say they are getting married.
I heard they won’t stop you if you do it.
After listening to you talk, I started thinking a lot. What should I do?
I don’t know