I can't imagine ever loving my employer this much. And heaven help whoever tells me I'm on "lockdown" so I can't leave the building and I have to work weekends.
I really encourage you to find a way to view your work that lets you love it, or do something else.
"Love what you do" is an employer tactic to maximize value and minimize cost of their employees hoping they'll work extra for passion instead of more money.
Unless you have substantial equity it's not your company. Don't be passionate about a profit, control, or ownership you were very intentionally cut from.
In this case the employer desires to run their company without paying you or dealing with you because they don't want you there. But as of today, they need you. If tomorrow they decide they don't, you'll be packing your boxes. Remember that.
If you enter into a work relationship where you are nice then you open yourself up for abuse and favors. People stop respecting your time and ideas and you slip into the role of company bitch. Set boundaries and never hesitate to leave if things are not in your favor.
It took 150 years of worker struggle to get a minimum wage, a civil war to get rid of slavery, and decades of violence to get rid of child labor. You are a worker. Remember what you are selling to the employer. Don't foolishly give away your labor capital. Maximize your own profit and minimize your own cost.
However, if you own a commensurate share, then disregard all of this as it doesn't apply.
Assuming you're at a job where you're being compensated in line with your abilities, you can either choose to view what you do as burdensome labor, or as a fun challenge. The only difference between these two views is that one will make you depressed, and the other will make you happy. How do you want to feel?
Most jobs aren't like that, though, and no matter how much you love something you eventually get tired of it.
People are more careful with expensive things and treat them better.
You aren't working at the leisurely indiscretion of the company.
You become a more efficient, effective, objective, focused and self-directed employee when you focus on and realize your cost/value proposition.
Of course if you were working for a foundation or charity then sure... This doesn't apply.
But for a few years it was great.
I even know an airline captain who complains endlessly, and that's still a dream job for most kids.
In those circumstances the coping mechanism is to desensitise and decouple so as to treat those 40 hours as simply an enabler for the other 128.
Your salary/equity/etc. vs. your value on your personal life either make overtime worth it or not.
Precisely, in a way.