As above really.
There isn’t much money in it, even at the upper end of a decent practice (speaking from experience in Edinburgh), but if you find a nice place to work it can be rewarding in other ways.
Hard work, long hours at uni and after. A dwindling amount of respect from others involved in the construction industry (who needs experts?), a shocking procurement system for public buildings (in Scotland at least), fee levels that are likely to only get lower, etc etc. Also as mentioned, expect opportunities to come and go as the economy swings. We’ve just had a round of redundancies, and may have more soon.
Saying that, we have a few part 2s with us just now who all seem remarkably enthusiastic, and are well aware of the various pitfalls.
You might have done some drawing in Revit or similar at school, and that is now how buildings are drawn, for better or worse. Model making with your hands is still a very valuable tool though, and a technique our office strive to make use of. We have a laser cutter, 3d printer, and workshop for woodworking and all sorts of other interesting things.
Regardless of computer use (I spend my days in sketchup and photoshop), being able to draw properly is a huge bonus at uni and for CVs, as it’s a very direct way to communicate design sensitivity and attitude. A beautiful hand drawing can be much more revealing than a visual from a piece of drawing software. There’s no denying you will almost certainly end up tethered to a mouse and keyboard, but the ability to sketch and draw will be appreciated.
As long as you go in with your eyes open there can be a rewarding career in there somewhere.