Does anyone still buy miners as an investment? Please share your experiences

I have very cheap electricity for my location, I live in the US but my per KWH cost is under 6 cents, I figured since I'm locked into such a cheap electricity rate I could mine and make extra money. I already own a good amount of crypto and am long term bullish, but when looking at miners and prices they take over a year to breakeven. Maybe this is good but it feels pretty scary factoring in new miners being released in March and the fact that hash rates are always changing, I could see myself purchasing and never breaking even.

I'm just looking for general advice from members who have tried this before, and I'm wondering how to go about purchasing a miner, I feel like I could break even buying used, but I'm unsure if aftermarket miners are at all effective.

Please share your experiences and let me know what you guys would do in my position.

I have about 25k in cash available and I own my house (which is very rural). I work full time and I'm going to college for Accounting next Spring.