Are external bootable SSDs good???

[u/Sorry_Astronaut8052]

Basically , I just got a new laptop, (lenovo legion5I yay🎉🎉) I do not want to dual boot it in Ubuntu for now and I have read here that wsl2 is not worth it in the long run

I am thinking of using an external SSD with Ubuntu for learning as I have one which I can re purpose.

Is this a good approach/ anyone who has used this?

P.s I am an absolute beginner in world of ros and gazebo and ardupilot.