Depends on which alt coin you are talking about here. If it is in the top 10-20 yeah, probably its a solid project with good demand but still going to be very volatile depending on what market we have (bear or bulls).
Lucrative if you are going to be a long term holder, or if you find a gem or you get lucky by investing on some meme or shit coin early and then it's being pump by certain group and hit a all time high and then you sell your stash.
I think OP is referring to the whole altcoin but all I can say is once bitcoin market price is down let's expect that altcoins will follow. However, those altcoins belong to top crypto and also those who has a good use case can still withstand in bear market though most probably price correction will still there but there are still the most worthy altcoin to invest with. Answering the question of OP, all I can say it depends on the flow of the market especially bitcoin..